What happened: Watson said his emotions got the best of him and acknowledged frustration over injuries and uneven play since arriving in Cleveland. The remarks followed Saturday's 31-7 preseason loss, when boos grew after he entered in the third quarter.

Why it matters: The apology came hours after Cleveland named Watson its Week 1 starter. Cleveland's five-year, $230 million fully guaranteed contract keeps the stakes well beyond one preseason exchange.

What to watch: Watson is slated to lead Cleveland in its Sept. 13 road opener. His next home appearance will bring another test of the crowd's response.