Arroyo's pitch count by inning: 21, 13, 14, 17, 14, 32, 16
Arroyo sat at 111 pitches after his high-stress 32-pitch 6th inning, and most of those 32 pitches were out of the stretch since runners were on base for the bulk of the inning. At that juncture in the game, Arroyo's workload was ideal, but nowhere near light enough to warrant him coming out for another inning.
And then in the bottom of the 6th inning Narron sends Arroyo to the plate with two outs and a basestealing threat in Olmedo on first base. Of course, Olmedo steals second base and gets into scoring position, but Arroyo bats for himself, makes an out - like pitchers usually do when they swing the lumber - and Narron decides to run him out there again in the 7th inning.
That's totally irresponsible managing on Jerry Narron's part.
As I said earlier, there is no way in the world I'm running my pitcher back out to the mound for another inning when he's already thrown 111 pitches, especially with 32 of those pitches thrown in the previous inning. Heading into tonight, Arroyo had pitched to exactly two batters at a pitch count of 121+ pitches in his entire career, and the chances of him getting out of the 7th inning in few pitches is ... remote. It really wouldn't surprise me if Arroyo's arm was taxed tonight in the 7th inning further than it ever has been in his career.
I hate to say it, but that's a Dusty Baker style of handling a pitching staff, and it's a good way to cause damage to a pitcher's arm.