My position is that you do what is best for the team as a player and as a FO. If they have no closer, why the hell would they watch games go by the wayside when they have them won. THIS SEASON, Paps is more valuable as a closer. I dont care if it is for 50 innings vs 200IP as a starter. Those 50 innings are the most important innings of the game. And as any yankee fan who watched the Jose Acevedo's, Antonio Osuna's, and Kyle Farnsworth's of the world try and close while Rivera was out, you know that not just any old schmuck can pitch the 9th. And the sox have a lot of any old schmuck's in that bullpen. If you want an example of what a great team with a s*** closer looks like, take a look at the Guardians from a yr ago. They blew something like 30 saves last yr and had a Sv% of 30-40%. You convert 80% which any good closer can do, and that team is fighting for the playoffs. The sox are built very similarly. Top loaded rotation, a good but not fantastic offense and an absolute pile of s*** bullpen. I would have loved seeing Tavarez as the closer. Nothing like seeing the sox piss away their season in May. Now they will have to wait until their middle relief or lack of SP depth bites them in the ass.
As far as a medical opinion goes, I dont really see how starting could be less stressful on the arm. Then again, it isnt my specialty, but a starter pitches 150 times (including warmups) then comes and throws a bullpen 2 days later, then is starting 2 days after that again. Yeah, it is scheduled and yes it gives the arm time to regenerate, but I am not sure of the physiology of stress in an unnatural position. But then again, I am not a preeminent orthopedic surgeon as Dr. Andrews is. And to do what he did, the guy had to do..
4 yrs of college
4 yrs of med school
5 yrs of residency (6 in some places)
2-3 yrs of fellowship
and then logged thousands of shoulder and elbow surgeries to become what he is today. Lets just say, his opinion matters a wee bit more than anyone else's on this board. Doesnt mean he is right, but I'll take his word over anyone else's until he is disproven scientifically.