[Makonnen]

So this is a strange one ... according to OOTP, everyone (well, virtually everyone) in the league is a rookie. So we're instead giving it out to the best performing players who did not qualify for the league leaderboards--essentially mid or late season call ups.

Here are the position players under consideration

 Name  Tm  Pos  G  BA  OPS  SLG  WAR  
 John Briggs  BRK  OF  39  322  415  529  0.9  
 Jim Edmonds  HOD  OF  71  293  348  576  2.0  
 Al Kaline  DET  OF  34  301  374  573  0.9  
 Andy Van Slyke  HOM  U  69  321  373  558  2.5  
 Larry Walker  OTT  OF  79  282  375  589  2.9

And, the pitchers

Name  Tm  Record  G  GS  Sv  H  WAR  
 Bob Feller  CLE  8-4, 3.89  24  11  0  0  1.8  
 Greg Maddux  BBB  6-7, 3.53  27  18  0  2  1.8  
 Joseíto Muñoz  POR  5-5, 2.57  24  9  3  2  1.8  
 Mike Mussina  BAL  16-7, 4.08  29  16  1  1  1.9  
 Bret Saberhagen  HOU  4-7, 4.02  17  17  0  0  1.8  
 Ed Walsh  CAG  8-3, 3.26  35  11  0  5  3.2

I'm going to push Walker out of the running, as his limited time was almost exclusively through injury.

Muñoz is probably the most impressive performer over the small sample size. But it is a small sample size. We'll go with Walsh, Van Slyke, and Muñoz.