He was good in August, too. (4 of 6 months is 67%)
Plus, I just used the "first half- second half" numbers based off the ALL Star Game. Ottavino actually did well up to July 21st.
.559 OPS Against/ 2.54 ERA.
That was the team's 96th game or 59% of the season, which is just barely closer to 2/3 than 1/2.
After July 21, he did this:
8 games: 1.011 OPS Against
8 games .500 OPS Against
2 games 1.700 OPS Against
4 games .231 OPS Against
Last 5 gms .1.738 OPS Against
Just about every RP'er can be broken down this way to show that just a handful or two bad games skew their numbers, but this seems rather extreme. Ottavino was pretty good over his first 42 games, then had 2 good stretches of 8 and 4 games sandwiched around 3 bad stretches of 8, 2 and 5 games of horrendous outings.