Michael Wacha flew so far under the radar that the righthander failed to gain even an honorable mention below MLB Trade Rumors' list of Top 50 free agents this offseason:
https://www.mlbtraderumors.com/2021/11/top-50-mlb-free-agent-rankings.html
Wacha might be a mirror image of lefthander Andrew Heaney, whom the Los Angeles Dodgers signed earlier this month for a reported $8.5 million.
Wacha and Heaney, who were born less than a month apart, were the 19th and ninth picks in the 2012 draft out of Texas A&M and Oklahoma State, respectively. In fact, Wacha and Heaney faced each other that year in Big 12 Conference action*:
https://12thman.com/sports/baseball/stats/2012/oklahoma-state/boxscore/4804
Since the start of the 2019 season Wacha has posted an ERA of 5.11 and ERA+ of 80 in 285.1 innings whlle Heaney has posted an ERA of 5.21 and ERA+ of 87 in 291.2 innings.
Heaney occupied the final slot on the MLBTR Top 50 free agent list but was unranked at The Athletic's Top 100 list where Wacha came in at No. 100. Neither Wacha nor Heaney made the Top 50 free agent list at FanGraphs:
https://blogs.fangraphs.com/2022-top-50-free-agents/
The Red Sox and Dodgers, two of baseball's more successful franchises, presumably had more and better information on Wacha and Heaney than the casual fan who is puzzled by each signing.
* falling deeper down that rabbit hole, the previous year Wacha and Texas A&M toppled current Seattle lefthander Marco Gonzales and Gonzaga in a game saved by the Aggies' Ross Stripling:
https://12thman.com/sports/baseball/stats/2011/gonzaga/boxscore/3363