Is Yu really an ace though? Sure, he pitched like one (221 ERA+) for 76 IP in 2020, but in 2019 he only posted a 110 ERA+ in 178 IP, finishing 43rd by FIP based WAR & 31st by runs allowed based WAR out of 75 pitchers with at least 150 IP. In 2018 he was hurt & only threw 40 IP with an 85 ERA+. Add it all up & ZiPS projects him for 150 IP with a 120 ERA+ (3.2 WAR) in 2021, which is more of a solid #2. The only time in his career he really pitched like an ace for a full season was back in 2013 when he posted 209 IP with a 145 ERA+, finishing 12th by FIP based WAR & 2nd by runs allowed based WAR. He was pretty great in the 2nd half of 2019 the further he got away from his injury riddled 2018. After the all-star break he averaged over 6 innings per start, 81.2 innings, 2.76 ERA with 118 strikeouts and only 7 walks. Add that to this year and his last 25 starts he's posted a 2.40 ERA with 211 strikeouts and 21 walks in 157.2 innings. This board would be flipping their you know what if we got him