The 19th annual tournament will be held at Dove Canyon Golf Course.
With 17 games left in the regular season, the Trojans have been rewriting the USC record books.
Trojans enter the weekend on a one-game winning streak.
Sunday's game will be telecast live on ESPNU at 2 p.m. PT.
Trojans will send freshman LHP Sean Adler to the hill.
Former major leaguer and Trojan great Randy Flores joined the USC baseball coaching staff on March, 1, 2013.
On the hiring of Flores, head coach Dan Hubbs said, "We are really excited about Randy Flores joining the coaching staff. He brings a wealth of baseball experience. We are also excited about the energy and enthusiasm that he exudes and brings to the ballpark every day. After working recently as a broadcaster for the team, Randy has a familiarity with the players and they are familiar with him. We really just feel that he is a good fit and we are thrilled to be bringing back another great Trojan."
Flores joins the Trojans after retiring from a 15-year career in professional baseball in 2012. He played eight seasons as a left-handed pitcher in the major leagues with the Texas Rangers, Colorado Rockies, St. Louis Cardinals and Minnesota Twins. He won a World Series pennant in 2006 as a member of the St. Louis Cardinals. Flores was the pitcher of record in the decisive NLCS game seven that gave the Cardinals the trip to the World Series. He gave up zero earned runs in three appearances during the 2006 postseason.
At USC, Flores was a recruited walk-on, who blossomed into the ninth round draft pick of the New York Yankees in 1997. He had a stellar four-year career at Troy, racking up accolades from 1995 Co-Pac-10 Pitcher of the Year to three-time All-American while rewriting the USC record books. Flores, a four-time letterwinner from 1994-1997, also collected All-Pac-10 honors all four seasons. To date he still holds many of USC's career pitching records, including wins with 42, innings pitched with 484.1 and complete games with 22. He also ranks in the top 10 with 316 career strikeouts and the top three with 67 games started. Flores finished his USC career with a record of 42-10 and a 3.29 ERA. His innings pitched mark of 484.1 is also a Pac-12 record.
Flores earned Pac-10 South Co-Pitcher of the Year honors in 1995 after going 13-3 with a 3.24 ERA and 86 strikeouts to lead the Trojans to a College World Series appearance, where he was named to the All-College World Series team. One of his best individual performances came on May 17, 1996 where he allowed only two hits to Washington in a 7-2 victory.
After his retirement from professional baseball in 2012, Flores worked as an on-air analyst for ESPN in their coverage of the 2012 NCAA Regionals and Super Regionals. He has also broadcast USC games for usctrojans.com and the Pac-12 portal.
Flores graduated from USC with a B.S. in Business Administration with a concentration in Finance. He is currently a master's student in the Rossier School of Education Postsecondary Administration and Student Affairs.
Randy's brother Ron also played baseball at USC, where he was a member of the 1998 NCAA championship team and had a career in Major League Baseball.
Randy and his wife Lindsey have two daughters, Sloane (3) and Rowan (1).