Astros-Tigers a prospect bonanza 

March, 5, 2014
Mar 5
9:39
PM ET
FoltynewiczAP Photo/Alex BrandonMike Foltynewicz has elite stuff, but his delivery needs refinement.

KISSIMMEE, Fla. -- A few scouting notes from Wednesday's Detroit Tigers-Houston Astros Grapefruit League matchup, which featured a number of my top 100 prospects.

• The standout prospect for Houston was Mike Foltynewicz -- my No. 70 prospect -- who hit 99 mph several times in his first inning of work and was 94-99 over the two innings, pairing his fastball with a 78-83 mph curveball that ranged from just below average to plus.

Foltynewicz has the two pitches and size to start, clearly, but he was altering his arm slot pitch by pitch, dropping down for most of his fastballs, resulting in something akin to a flat two-seamer, lifting his slot to three-quarters so he can get on top of the breaking ball.