It seems he had plantar fasciitis most of last season and it got worse in July and Aug.
Kirk was 24 at the start of last year and for a while was leading all rookies,
Pre ASB 254 Abs, 254 ABS, 39 runs, 25 RBI, 4 SB, 7 HRS 25 Doubles, Gotta wonder if his downfall was that plantar thing.