The answer to yesterday's puzzle is Matt Kemp.
As hinted by the limerick, look back at the last 31 puzzle solutions (yes, ubragg won 16 of them - so not even half! Slacker.), which span PCS Seasons II (starting with Puzzle #11), III, and IV, and look at "how each begins" - i.e., the first word. Doing so yields the following (arranging in limerick format encouraged but not required):
The word that you seek is the name,
Of who had the best single game,
In the last two seasons,
Inclusive of this one,
As measured by Hack’s stat of fame
Hack is a reference to Hack Wilson, whose stat-of-fame was his record 191 RBI's during the 1930 season. Matt Kemp had the Dodgers' best single-game RBI total over the past 2 years, with 6 in an 11-8 victory over the Reds this past June.
Congratulations Steve K, and mr c, Josh S, Jason, and ubragg. FINAL puzzle rankings to post soon!