Petit lasted the entire game - his fourth consecutive complete game - striking out eleven batters and only giving up two runs against the Wave. Aside from keeping LSU alive in the regional, he also kept the rest of LSU's staff fresh for action against ULL in the finals on Sunday.
"I knew I had to finish this game," said Petit.
"This game was won by Bo Petit," said LSU head coach Smoke Laval. "He just competed."
After struggling in the first game against ULL, the Tigers finally managed to get things going at the plate, though in a limited fashion. LSU recorded 11 hits against the Green Wave but left eight men on base.
"We're saving them for tomorrow," Laval joked.
LSU struck first in the top of the second, when Chris Phillips smashed a double to right-center field. The ball made it to the warning track and allowed David Raymer to make it home from first base.
Tulane had an answer in the bottom of the inning, however, when Turner Brumby brought in Anthony Giarratano with an RBI single to center field.
The Tigers added another run in the third with Rocky Scelfo's RBI single that brought in Matt Heath.
In the fourth, David Raymer led off with a high and deep home run to right field.
"Thank goodness, it was about time," Raymer said of his home run after the game. "It was a good fastball and I just put a good swing on it."
Raymer's hit forced Wave coach Rick Jones to go to his bullpen for left-hander Joey Charron, who had only given up one run to LSU in his career.
Charron started quickly and retired the first two batters he faced, but Aaron Hill stepped followed with a mammoth home run past the left field bleachers that gave LSU a 4-1 lead.
From then on however, Charron was outstanding, retiring 15 of the final 19 LSU batters he faced. Charron struck out seven and was backed up by great defense.
"We didn't get many hits after the fourth, but we hit the ball if you know what I mean," said Smoke Laval of Tulane's efforts in the field.
The Wave would be unable to take advantage however, getting only three hits in the final five innings, and getting only one more run off Tommy Manzella's solo home run in the fifth.
"We couldn't get the big hits and credit that to Bo Petit," Jones said.
"He did a did a great job of keeping us off balance," added Wave first baseman James Jurries.
Petit constantly managed to stay ahead of batters in the count and had great placement on his fastball. His slider was also particularly effective in holding the top five Tulane hitters to 4-for-19 at the plate, including Giarratano, who had a career .542 batting average versus the Tigers.
The win sets up a rematch for the Tigers against ULL at 1 p.m. Sunday. The Ragin' Cajuns beat LSU 5-0 Saturday afternoon, and the Tigers will have to beat the Cajuns twice to advance to the NCAA Super Regional.
Laval will have to be creative with his pitching staff, as usual weekend starters Lane Mestepey, Brian Wilson, and Petit have all pitched.
"Jake Tompkins will start the first game (Sunday) and then I don't know," Laval replied when asked about his plans.
"We knew it wouldn't be a cakewalk this weekend," said David Raymer of the competition. "The best teams in Louisiana are all here."