After a shaky performance against the Tigers in which he went just 4.1 innings, the White Sox optioned Dylan Axelrod to Charlotte. With a split doubleheader tomorrow against the Indians, two pitchers will be arriving from Charlotte.

One of those will be the first "taxi squad" player in White Sox history. The new collective bargaining agreement added the ability for teams to add a 26th man to their active rosters for split doubleheaders scheduled at least 24 hours in advance. The other pitcher will be Axelrod's replacement.

We know Eric Stults will be starting the nightcap so he will be one of the call-ups. It will be interesting to see whether he will be the 26th man or a more permanent addition to the White Sox. With the off day on Thursday, a fifth starter would not be needed again until May 15, assuming the White Sox skip that spot's next start. It's unlikely the White Sox would keep Stults in the bullpen because having 5 lefties would be a bit ridiculous. Stults this season: 5 GS, 28.2 IP, 25 H, 10 BB, 26 K.

We also know one of the call-ups will be a reliever. Both Brian Bruney and Jhan Marinez pitched for Charlotte today, so it's likely that it won't be either of them. There aren't any awe-inspiring relief options in the minors but Deunte Heath, Leyson Septimo and Gregory Infante are all possibilities.

Edit: But the correct answer is LHP Jose Quintana is coming up from Birmingham. Quintana this season: 6 GS, 35.1 IP, 32 H, 11 BB, 26 K.