His off speed isn't good enough. His changeup isnt fooling anyone and his curve doesn't have enough spin. He's always been a primarily fast ball pitcher. He gets a ahead with it and drops either a change or slider and once in a while a curve.
Estrada can get much more in the market. He can get 3-4 year contract easily.
I personally don't like the long term contract for Estrada, but it really depends if we resign Price.
I would let Price pitch game 5 and Stroman game 6. Try to finish the series and not push it to a game 7 away.
Based on last game Estrada's fastball/ changeup doesn't really work well against the Royals.