Michael Seth Maness (/ˈmeɪnɛs/ MAY-ness;[1] born October 14, 1988) is an American former professional baseball pitcher.

He played in Major League Baseball (MLB) for the St. Louis Cardinals and Kansas City Royals.

[2] He played college baseball for the East Carolina Pirates where he became a four-time first team All-Conference USA performer (2008–11).

Maness started his professional career with the Batavia Muckdogs of the Class A-Short Season New York–Penn League.

His efforts on the mound helped Double A Springfield as they were named Minor League Team of the Year by Baseball America.

An arbitration-eligible player prior to the 2016 season, Maness and the Cardinals agreed to a one-year, $1.4 million contract on January 15, 2016.

He will eventually be able to join a Minor League affiliate on a rehab assignment, instead of as a member of that club's roster.

[18] After a medical review of his injury, Maness had surgery on August 18, to fix his Ulnar collateral ligament of elbow joint instead of Tommy John surgery ligament replacement, drastically reducing his recovery time from 12–15 months to 6–8 months, which would make him available for Spring Training in 2017.

[23] On February 7, 2019, Maness signed with the High Point Rockers of the Atlantic League of Professional Baseball.

[24] He made 1 start getting the win going 6 innings giving up 3 hits 1 earned run (1.50 ERA) with 1 walk and 5 strikeouts.

In January 2022, Maness joined the UNC Wilmington men's baseball team as the Coordinator of Player Development and spent the entire Spring 2022 season with the Seahawks.