Let's take a look back at which prospects turned in the best performances in 2011. I prefer wOBA to OPS, but it was easier for me to gather this data by OPS. I used an age cutoff of September 6, 2011.
OPS Leaders (A+/A)
1. Michael Choice OAK, 21, CF, High-A - .918 (eBay)
2. Jake Marisnick TOR, 20, CF, Low-A - .888 (eBay)
3. Miles Head BOS, 20, 1B, Low-A - .887 (eBay)
4. Jurickson Profar TEX, SS, 18, Low-A - .883 (eBay)
5. Brandon Jacobs BOS, LF, 20, Low-A - .881 (eBay)
6. Ramon Cabrera PIT, C, 21, High-A - .881 (eBay)
7. Christian Yelich FLA, LF, 19, Low-A - .871 (eBay)
8. Robbie Grossman PIT, RF, 21, High-A - .869 (eBay)
9. Elevys Gonzalez PIT, 3B, 21, High-A - .841 (eBay)
10. Nolan Arenado COL, 3B, 20, High-A - .836 (eBay)
* Minimum 275 PA; Ties broken by HR; Maximum age A+ (21), A (20)
OPS Leaders (AAA/AA)
1. Paul Goldschmidt ARI, 1B, 23, Double-A - 1.061 (eBay)
2. Anthony Rizzo SD, 1B, 22, Triple-A - 1.056 (eBay)
3. Taylor Green MIL, 3B, 24, Triple-A - .997 (eBay)
4. David Cooper TOR, 1B, 24, Triple-A - .974 (eBay)
5. Mike Trout LAA, CF, 20, Double-A - .958 (eBay)
6. Jerry Sands LAD, 1B, 23, Triple-A - .931 (eBay)
7. Trayvon Robinson SEA, CF, 24, Triple-A - .926 (eBay)
8. Matt Adams STL, 1B, 23, Double-A - .923 (eBay)
9. Travis d'Arnaud TOR, C, 22, Double-A - .914 (eBay)
10. Neftali Soto CIN, 1B, 22, Double-A - .904 (eBay)
* Minimum 275 PA; Maximum age AAA (24), AA (23)
Strikeout Leaders
1. Matt Moore TB, LHP, 22, Double-A - 210 (eBay)
2. Trevor May PHI, RHP, 21, High-A - 208 (eBay)
3. Tyler Skaggs ARI, LHP, 20, Double-A - 198 (eBay)
4. Brad Peacock WAS, RHP, 23, Double-A - 177 (eBay)
5. Drew Hutchison TOR, RHP, 21, Double-A - 171 (eBay)
6. Shelby Miller STL, RHP, 20, Double-A - 170 (eBay)
7. Julio Rodriguez PHI, RHP, 21, High-A - 168 (eBay)
8. Wily Peralta MIL, RHP, 22, Triple-A - 157 (eBay)
9. Jake Odorizzi KC, RHP, 21, Double-A - 157 (eBay)
10. David Holmberg ARI, LHP, 20, High-A - 157 (eBay)
11. Alexander Torres TB, LHP, 23, Triple-A - 156 (eBay)
12. Matt Harvey NYM, RHP, 22, Double-A - 156 (eBay)
13. Tom Milone WAS, LHP, 23, Triple-A - 155 (eBay)
14. J.C. Sulbaran CIN, RHP, 21, High-A - 155 (eBay)
15. Robert Erlin SD, LHP, 20, Double-A - 154 (eBay)
16. Joseph Wieland SD, RHP, 21, Double-A - 150 (eBay)
17. Andrew Oliver DET, LHP, 23, Triple-A - 143 (eBay)
18. Delin Betances NYY, RHP, 23, Triple-A - 142 (eBay)
19. Patrick Corbin ARI, LHP, 22, Double-A - 142 (eBay)
20. Enny Romero TB, LHP, 20, Low-A - 140 (eBay)
21. Jeff Locke PIT, LHP, 23, Triple-A - 139 (eBay)
22. Chris Schwinden NYM, RHP, 23, Triple-A - 139 (eBay)
23. Maikel Cleto STL, RHP, 22, Triple-A - 135 (eBay)
24. Randall Delgado ATL, RHP, 21, Triple-A - 135 (eBay)
25. Alan Webster LAD, RHP, 21, Double-A - 135 (eBay)
* Ties broken by highest MiLB level reached; Maximum age AAA (24), AA (23), A+ (21), A (20)
Follow Adam on Twitter @AdamWFoster.