How well was Canning doing though?

He'd allowed 2 runs and 5 baserunners in the previous 11 hitters.

He has a 5.07 ERA.

He has allowed a 1.000+ OPS after 75 pitches this season.

Two LHBs were due.

Watson had a 3.43 ERA.

Watson pitched poorly, but the decision was obvious. https://t.co/4ImkCtUE8f

— Jeff Fletcher (@JeffFletcherOCR) June 16, 2021