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2019 South Side Sox Prospect Vote: Round 21

Bryce Bush fills out our Top 20. Now, who is the 21st-best prospect in the White Sox system?

Hidden treasure: Bush, a surprise sign as a low-round pick in 2018, has the fan base excited.
Kim Contreras (@Cu_As)/South Side Sox

We started this out trying to get as many names as possible on the ballot, but that only worked for about a dozen rounds before the results started to get a little wonky — no offense, Lincoln Henzman. So we’re back to the traditional five players out for each round, with combined 2018 stats to help you out in your decision-making process.

As we count down the SSS Prospect Vote, we’ll be counting up the overall list of Top 100 Prospects, with the SSS poll vote counting as a voice in the order of our official SSS Top 100.

Here’s how last year’s prospect vote wrangled out — all 42 picks, with an archive of every article in the 2018 series.

A final note: All copy below the poll, unless otherwise noted, comes from wsm’s Deep Dive series. Credit due. YOTH is just running the numbers.

Sound cool? Now, get voting!

Voting results for Round 20

Bryce Bush jumped back onto the ballot and immediately became the No. 20 prospect, with 111 of 221 votes (50.2%) in his first turn in our prospect poll.

Note on the table below: “Rounds” refers to the number of ballots on which a player has appeared.

2019 South Side Sox Prospect Vote Winners

2019 South Side Sox Prospect Vote Third Basemen

More information on our polling.


Who is the 21st-best prospect in the White Sox system?

This poll is closed

  • 37%
    Jimmy Lambert
    (78 votes)
  • 13%
    Kodi Medeiros
    (28 votes)
  • 6%
    Konnor Pilkington
    (14 votes)
  • 35%
    Laz Rivera
    (74 votes)
  • 7%
    Jordan Stephens
    (15 votes)
209 votes total Vote Now

Jimmy Lambert

Right-handed starting pitcher
Age 24
2018 SSS poll ranking N/R
2018 High Level Birmingham (AA)
Overall 2018 stats 8-8 ▪️ 18 starts ▪️ 95 23 IP ▪️ 3.67 ERA ▪️ 110 K ▪️ 27 BB ▪️ 1.087 WHIP

Lambert, brother of top Colorado Rockies prospect Peter Lambert, improved in each of this three years with the Fresno State Bulldogs. In 15 starts in his junior season totaling 97 2⁄3 innings, he posted a 3.13 ERA, 1.20 WHIP. In those innings, he allowed 98 hits (.280 OBA) and 19 free passes (1.75 BB/9) while striking out 78 (7.19 K/9). With his control and solid four-pitch repertoire, the White Sox drafted him in the fifth round in 2016, signing him to a $325,000 bonus.

Lambert struggled with the AZL Sox and Kannapolis in 2016, perhaps because he was battling some fatigue. That year in 37 2⁄3 innings, he posted a high 5.26 ERA and 1.51 WHIP; he relinquished 44 hits (.288 OBA) and 13 walks (3.11 BB/9) but stuck out 43 batters (10.27 K/9). In 2017, returning to Kannapolis, Lambert excelled with a 2.19 ERA and 1.19 WHIP; however, he struggled at Winston-Salem, with a 5.45 ERA and 1.51 WHIP. Combined with both teams last year in 150 innings, Lambert posted a 3.84 ERA and 1.35 WHIP — allowing 163 hits (.282 OBA) and 40 walks (2.40 BB/9) while striking out just 102 (6.12 K/9) overall.

In 2018, Lambert put it all together, and was much tougher to hit. In 18 starts with Winston-Salem and Birmingham covering 95 2⁄3 innings, Lambert posted a 3.67 ERA and 1.09 WHIP in allowing 77 hits (.222 OBA), walking 27 (2.54 BB/9), and striking out 110 (10.35 K/9). Unfortunately, Lambert’s last game was in late July, as he suffered a strained left oblique. It’s possible he could’ve returned in late August, but the Sox opted not to take any chances.

Lambert’s velocity improved this year, as he transitioned from a two-seamer to a four-seamer that peaks at 96 mph. Lambert also also throws an above-average slider and curveball. His changeup is consistent; he held lefties well at Winston-Salem but he had a .321 OBA against them in a short sample size in Birmingham. Lambert currently ranks 21st among White Sox prospects according to MLB Pipeline, and is expected to return to Birmingham next year, since he only had five starts for the Barons in 2018.

Kodi Medeiros

Left-handed starting pitcher
Age 22
2018 SSS poll ranking N/R
2018 High Level Birmingham (AA)
Overall 2018 stats 7-7 ▪️ 27 games (22 starts) ▪️ 137 23 IP ▪️ 3.60 ERA ▪️ 141 K ▪️ 67 BB ▪️ 1.366 WHIP

When Medeiros finished his senior season with Waiakea H.S. (Hilo, Hawaii) with a 1.12 ERA, .178 OBA, and 16.7 K/9, PerfectGame ranked him as the sixth best prep prospect available in the 2014 MLB draft. Thus, it was no surprise when the Milwaukee Brewers selected him with their first round pick (12th overall). After receiving a $2.5 million signing bonus, Medeiros struggled with the AZL Brewers to the tune of a 7.13 ERA and 2.09 WHIP.

The following year, Medeiros bounced back somewhat with the Brewers’ A-affiliate Wisconsin, where he posted a 4.44 ERA and 1.28 WHIP in 93 1⁄3 innings, allowing 79 hits (.228 OBA) and 40 walks (10.0%) and striking out 94 (23.5%). However, he slid back in 2016 and 2017 for the Brewers’ A+ affiliates in Brevard County and Carolina, where in a combined 213 1⁄3 innings, Medeiros posted a 5.36 ERA, 1.56 WHIP, .266 OBA, 11.9 BB%, and 19.9 K%.

In 20 outings (15 starts) for AA Biloxi in 2018, Medeiros was enjoying his best minor league season to date — a 3.14 ERA and 1.31 WHIP over 103 1⁄3 innings, allowing just 90 hits (.234 OBA) and 45 walks (10.1%) while striking out 107 (24.0%). On July 26, Medeiros was traded along with right-handed pitcher Wilber Perez to the White Sox for closer Joakim Soria. After the trade, Medeiros struggled a bit in seven starts totaling 34 1⁄3 innings, posting a 4.98 ERA and 1.54 WHIP while allowing 31 hits (.250 OBA), 22 walks (14.5%) and 34 strikeouts (22.4%).

Medeiros currently ranks 19th among White Sox prospects according to MLB Pipeline. His fastball maxes out at 95-96 mph, with tailing action. He’s also got a plus slider which has a significant lateral break, and a solid changeup with good sink and fading action. However, he may have a more successful career as a closer for two reasons:

  1. He’s got a unique arm slot which makes it difficult for lefties to pick up: Lefties hit just .160 against him this year compared to .261 versus righties
  2. His control has been totally underwhelming: His career walk percentage in his four years of professional baseball is 11.4.

With that said, expect Medeiros to return to the Birmingham rotation to begin 2019.

Konnor Pilkington

Left-handed starting pitcher
Age 21
2018 SSS poll ranking N/R
2018 High Level Great Falls (Rookie)
Overall 2018 stats 3-8 ▪️ 34 games (32 starts) ▪️ 130 23 IP ▪️ 5.03 ERA ▪️ 129 K ▪️ 43 BB ▪️ 1.462 WHIP

Pilkington had been considered one of the top collegiate southpaws in the country, since the beginning of his playing days with Mississippi State. After his solid sophomore season and terrific runs in the Cape Cod League and Team USA in 2017, Pilkington’s star couldn’t have shone brighter. In that sophomore season, he posted a 3.08 ERA and 1.14 WHIP in 108 innings, allowing just 76 hits (.199 OBA) and 47 walks compared to 111 strikeouts.

However, in 2018 with the Bulldogs, Pilkington compiled a 4.47 ERA and 1.35 WHIP over 102 2⁄3innings, as he allowed 106 hits (2.69 OBA) and 33 walks compared to 107 strikeouts. As a result of his junior slump, which saw him slip from 96 to 92 mph on the radar gun, he fell to the third round of the draft, where the White Sox were happy to snap him up with a $650,000 signing bonus.

Pilkington struggled during his eight starts with AZL and Great Falls after signing. In a small sample size totaling 14 innings, he surrendered 21 hits (.344 OBA), five walks (7.4%) and 11 strikeouts (16.2%) while posting a 7.07 ERA and 1.86 WHIP.

According to MLB Pipeline, Pilkington’s delivery got off-line for much of the time this season, which caused a decline in velocity. He worked mostly at 88-91 mph and topped out at 93 this spring, but he has reached 96 mph in the past and still succeeds at lower velocities because his size and high three-quarters arm slot create a steep downhill plane. He has good feel for his advanced change, and also uses a slider that can get slurvy at times. MLB Pipeline currently ranks Pilkington 19th among White Sox prospects, and he should begin next season in pitcher-friendly Kannapolis.

Laz Rivera

Age 24
2018 SSS poll ranking 37
2018 High Level Winston-Salem (A+)
Overall 2018 stats 124 games ▪️ 13 HR ▪️ 61 RBI ▪️ .314/.361/.481 ▪️ 17-of-27 SB ▪️ 13 BB ▪️ 92 K

Rivera played for three different schools in his four-year college career: the University of Miami, Chipola JC (2015), and the Division II University of Tampa (2016-17). One thing is clear: The Miami resident excelled wherever he played. During that time, Rivera combined to slash .386/.442/.546 with 15 homers, 124 RBIs, 25 stolen bases, 40 walks (5.63%) and 66 strikeouts (9.28%) in 624 at-bats. After a typically successful season as a senior, Rivera wasn’t picked until the 28th round of the 2017 MLB draft.

His first assignment with the White Sox, upon receiving his $1,000 signing bonus, was with the AZL White Sox, and he didn’t disappoint. In 47 games (186 at-bats), Rivera slashed .296/.374/.446 with 12 doubles, five triples, two homers, 24 RBIs, eight walks (3.76%) and 26 strikeouts (12.21%). Of course, his 2017 success was taken with a grain of salt because Rivera was more than two years older than league average.

Rivera emerged as a true prospect in 2018 with Kannapolis, after slashing .346/.395/.502 in 237 at-bats with 15 doubles, two triples, six homers, 24 RBIs, seven stolen bases, six walks (2.26%) and 48 strikeouts (18.11%). After earning a promotion to Winston-Salem on July 21, Rivera held his own in 225 at-bats by slashing .280/325/.458 with 15 doubles, two triples, seven homers, 37 RBIs, 10 homers, seven walks (2.81%) and 44 strikeouts (17.67%). Thus, though his average dipped a bit in Winston-Salem, Rivera improved his power while marginally improving his walks and whiffs.

Rivera shot up the prospect charts last year and now ranks 28th among Sox prospects according to MLB Pipeline. He’s given 50 grades in all categories except power, which earns a fairly low grade of 40. Rivera is an average defensive shortstop who committed 19 errors last year. I project Rivera to begin the 2019 season with the Birmingham Barons; how he’ll do in that difficult hitting environment will determine whether he’s best suited for a starting or utility role going forward.

Jordan Stephens

Right-handed starting pitcher
Age 26
2018 SSS poll ranking 18
2018 High Level Charlotte (AAA)
Overall 2018 stats 8-10 ▪️ 28 starts ▪️ 146 23 IP ▪️ 4.23 ERA ▪️ 139 K ▪️ 54 BB ▪️ 1.398 WHIP

Stephens, a native of Alvin, Texas, played college ball for the nearby Rice Owls. He was considered by many scouts at the time of his junior season to be a possible third-round pick. However, three starts into that season, Stephens was injured and required Tommy John surgery, missing the remainder of the season. Thus, Stephens returned to Rice for his senior season and pitched surprisingly well: 3.17 ERA and 1.14 WHIP over 59 2⁄3 innings, allowing just 51 hits and 17 walks (2.56 BB/9) while striking out 75 (11.31 K/9). Due to his competitiveness and the results he posted during his four-year stint with Rice, Stephens was selected in the fifth round of the 2015 MLB draft — ultimately receiving a signing bonus of $300,000.

Stephens’ results had been solid from 2015-17, moving through the White Sox system quite rapidly while striking out more than one batter per inning and maintaining solid peripheral numbers in the process. He missed the first two months of 2017 with forearm tendinitis but still pitched effectively, with a 3.14 ERA and 1.30 WHIP over 91 2⁄3 innings, allowing 84 hits (.249 OBA) and 35 walks (3.44 BB/9) while striking out 83 (8.15 K/9).

In 2018, after a return to Birmingham for seven blistering starts, Stephens was promoted to Charlotte, where he struggled a bit. For the Knights in 21 starts (107 innings), Stephens posted a 4.71 ERA and 1.46 WHIP — allowing 114 hits (.271 OBA) and 42 walks (3.53 BB/9) while striking out 99 (8.33 K/9). Lefties hit .296 against his offerings at AAA, while righties hit just .242, and a similar differential occurred with Birmingham as well.

Stephens’ top pitch is an excellent, upper-70s curveball with good depth. While his fastball isn’t overpowering, the low-90s velocity is still effective because of the way he hides and locates it. He also has a cutter and changeup, which still need work due to his lack of results against lefties.

Because of issues Stephens has had staying healthy both in the college and professional levels, and due to his relatively small size and bulldog mentality, a switch to the bullpen may eventually be in order. At this moment, unless the White Sox acquire additional starters via trade or free agency, Stephens will be competing against the likes of Dylan Covey, Manny Banuelos, Spencer Adams and Jordan Guerrero in spring training for back-end spots in the rotation. The fact that the White Sox chose to add him to the 40-man roster this month, over the likes of both Adams and Guerrero, indicates he has the inside track on a rotation spot in 2019.