2) Johnny Cueto
Johnny Cueto hadn’t truly been healthy since 2016 and in the five seasons since, he hadn’t been like he was before. In the last five seasons, Cueto had a 4.38 ERA (95 ERA+) after he was an All-Star and came in sixth in NL Cy Young Award voting in 2016.
But this year, Cueto has been healthy and he has pitched like he did six years ago. In 16 games (15 starts), he has a 2.91 ERA. He’s averaging more than 6.1 innings per start and he has been remarkably consistent. In his last 13 games (12 starts and an emergency, five-inning long relief appearance), he has not allowed more than three earned runs in any of the appearances. Only one of those 12 starts has been less than six innings.
Overall, he’s also has a 137 ERA+, a 3.93 FIP, a 1.216 WHIP, and an average of two walks and six strikeouts per nine innings.
Cueto is only one a one-year contract worth $4.2 million so while he would have been a rental, there are a lot of teams that were searching for starting pitching, especially as well as he has pitched.