Showdown of the day:

So. 3B Garrett Buechele had three hits in support of Jr. RHP Michael Rocha (7.1 IP, 6 H, 1 ER, 2 BB, 7 K), as Oklahoma topped Arkansas, 5-2. The win provided a significant boost to Oklahoma's hosting hopes—it jumped the Sooners five spots to No. 18 in the Ratings Percentage Index, according to WarrenNolan.com. Arkansas, meanwhile, has lost four in a row heading into an increasingly important series at Vanderbilt. The Hogs are suddenly in danger of losing out on hosting, especially if Oklahoma finishes strong and Arkansas continues to falter.

Other showdowns:

• Tulane over Louisiana State, 9-1, in a battle of teams fighting for their postseason lives on the bayou. LSU has lost six straight games and 13 of its last 15. If the Tigers don't win their upcoming series against Mississippi State, they will not make regionals. And the way they have played over the last month, a series win against the struggling Bulldogs is hardly assured.
• North Carolina over Charlotte, 8-4
• Oregon over Portland, 4-2
• St. John's over Boston College, 17-9. The Eagles have little margin for error, and this loss hurts their already rather dim at-large chances.

Upset of the day:

Loyola Marymount—coached by former Cal State Fullerton assistant Jason Gill—stunned the ninth-ranked Titans, 11-10, in Fullerton. LMU  chased CSF starter Colin O'Connell (4.2 IP, 9 H, 8 R, 6 ER) in a 10-run fifth inning, highlighted by shortstop Shon Roe's three-run double. The Lions improved to 22-26 on the year.

• College of Charleston over Coastal Carolina, 10-4. The Cougars earned their 40th win of the season and all but punched their ticket to regionals with a huge win against a top 10 RPI team. CofC broke a 4-4 tie with five runs in the seventh, highlighted by Greg Blake's three-run double.
• Mississippi State over Southern Mississippi, 16-9, dealing the Golden Eagles' at-large hopes a crippling blow. USM dropped to No. 70 in the RPI.
• McNeese State over Louisiana-Lafayette, 5-4

Hitter of the day:

Nebraska Sr. OF Adam Bailey: 3-for-7, 3 R, 8 RBI, 2B, HR in 21-5 win vs. Creighton

Pitcher of the day:

Georgia Tech Jr. RHP Brandon Cumpton: 6 IP, 4 H, 0 R, 2 BB, 8 K in 9-3 win vs. Georgia State, in his first start since being replaced in the weekend rotation by Mark Pope