I don't know what a platelet rich plasma injection is but it sure sounds high tech.
Honestly, I don't like to see Tanaka go down from a sportsmanship perspective. If Buerhle was down earlier this year we'd likely have 4 or 5 more losses on the record too. I like to beat teams who field their best players. You could argue well the Jays are missing x, x, x so it balances out but if Tommy John Surgery is a possibility that does suck for them and we know from experience.