Posted by ESPN.com's Adam Rittenberg
WEST LAFAYETTE, Ind. -- Oregon defensive end Will Tukuafu first heard the phrase from his junior college coach, Ken Giovando.
As Oregon backslid in the first half Saturday, making "enough mistakes to last the rest of the season," according to head coach Mike Bellotti, Tukuafu began to repeat the line: Adversity introduces a person to himself.
"Things aren't always going to go our way," Tukuafu said. "But when those things don't go our way, how are we going to react? I think we reacted pretty well today."
More than a few things haven't gone Oregon's way during the last month, but the 16th-ranked Ducks continue to find a way.
Consider the stumbling blocks and the Ducks' response:
When the offense couldn't find the end zone for the better part of three quarters Saturday, the defense put up a wall at its own 40-yard line and wouldn't let Curtis Painter and Purdue cross it.
As starting running back Jeremiah Johnson played with a recently separated right shoulder, backup LeGarrette Blount stepped up with 132 rushing yards and two touchdowns, including the game-winner in the second overtime.
When Roper went down with a sprained left knee in the first overtime, freshman Chris Harper led the winning touchdown drive.
"We got as close as you could get to losing, but still we got a victory," offensive coordinator Chip Kelly said. "In the end, you're 3-0 and in January and February, no one's going to talk about the Purdue game."
Most of Oregon's mistakes Saturday stemmed from Kelly's unit, but the defense faced its own hurdles. Purdue's Kory Sheets gashed the Ducks for an 80-yard touchdown run on the second play from scrimmage and put his team up 20-3 on the first play of the second quarter.
But from that point, the Ducks' defense locked down. Purdue consistently got good field position but didn't advance past Oregon's 38-yard line on its next 11 possessions. The Boilermakers racked up just 22 yards on 17 plays in the second quarter.
"I challenged the defense to shut them out, and they did," Bellotti said. "They put the momentum on our side."
As Blount walked over to Kelly outside the visitors' locker room after the game, the coach embraced the 229-pound junior and said, "I'm proud of you."
Johnson insisted his shoulder was fine, but Bellotti acknowledged the back wasn't 100 percent. The Ducks needed Blount to step in, just as Roper did for Costa and Harper eventually did for Roper.
Though Jairus Boyd's 87-yard punt return for a touchdown late in the third quarter was undeniably the game's turning point, Blount changed field position and ignited the offense with a 72-yard dash from his Oregon's 4-yard line.
"He's one of a kind," Johnson said of Blount. "That's my boy. When I went out, he came in and did an excellent job today."
The heroics from Blount, Boyd and others helped Oregon survive a multitude of mistakes in all three areas of the game. Roper had two passes intercepted in Purdue territory, Oregon lost the turnover battle 4-3 and committed several costly penalties. The Ducks' inability to handle a short kickoff into the wind set up a Purdue touchdown.
Late in the third quarter, Bellotti slammed his headset to the turf after the defense was nearly whistled for illegal substitution on consecutive plays.
"I can't think of a game anywhere that we played that poorly," Bellotti said.
"We weren't nearly as focused," Harper said. "I don't think we had the same intensity we had for Washington or some of those other games. We came out sluggish."
They'll have to be better starting next week against Boise State, and more adversity awaits. Roper is expected to miss the game, meaning Harper or Jeremiah Masoli will start at quarterback.
Relief was the general sentiment after Saturday's win, but there were lessons, too.
"It makes me want to work harder," said Tukuafu, who had two sacks and recovered a fumble. "We want to understand the mind-set now. We faced a little adversity and our mind-set changed. Our work habits, all those things, increased a lot more this week."