William Enrique Cuevas Osorio [kway'-vahss / oh-so'-re-o] (born October 14, 1990) is a Venezuelan professional baseball pitcher for the KT Wiz of the KBO League.

He has played in Major League Baseball (MLB) for the Boston Red Sox and the Detroit Tigers.

He spent two-and-a-half seasons with the DSL Red Sox spanning 2009–2011, before joining the GCL rookie team late in 2011.

[1] Cuevas emerged during his first season with Lowell, as he posted eight wins and two losses in 77⅓ innings of work, striking out 72 batters while walking only 15 for a solid 4.80 SO/BB ratio.

[2] In addition, Cuevas ranked in the top of several statistical categories in the New York–Penn League, tying for first in wins, for second both in ERA and innings, and for third in strikeouts.

He then joined the Triple-A Pawtucket Red Sox in early August,[1] and ended his season on a high note.

[6] Cuevas made his MLB debut the next day, pitching 2+1⁄3 innings of relief against the Tampa Bay Rays, giving up three hits and two runs while taking the loss.

[10] He made his only appearance with the Tigers the next day, pitching 1⁄3 of an inning against the Cleveland Indians, allowing four runs on three hits.

[15] He was assigned to Triple-A and made 15 appearances (all starts) with Pawtucket through July 1, compiling a 5–5 record with 3.65 ERA in 86+1⁄3 innings pitched.

[16] Boston activated Cuevas on August 11, as their 26th player for a doubleheader against the Baltimore Orioles; he pitched in relief in the second game, and was returned to Triple-A the following day.

[19] Cuevas finished the season with an 0–2 record and 7.41 ERA with Boston, while making nine appearances (one start) and striking out 20 in 17 innings.

[20] On November 20, 2018, Cuevas was granted his unconditional release so he could sign with the KT Wiz of Korea's KBO League.

[28] Cuevas made 11 appearances (nine starts) for the Triple–A Oklahoma City Dodgers, registering a 6.14 ERA with 43 strikeouts in 44 innings of work.