Last year's game against New Mexico underscored UNLV quarterback Shane Steichen's season.
He came off the bench and sizzled, completing touchdown passes of 19 and 47 yards to stake the Rebels to a 17-7 lead. He was on his way to leading a third touchdown drive and going ahead 24-10 before halftime.
Then ...
Well, then Steichen badly underthrew an open Earvin Johnson in the end zone. The pass was intercepted, Steichen was never the same, and the Lobos rallied to win, 24-20.
It was the most glaring example of Steichen's play -- stretches of promise foiled by a key mistake or two.
Now as he begins his junior season under first-year coach Mike Sanford in a radically different offense, one of the major questions entering Monday's 10 a.m. PDT opener at New Mexico is whether Steichen can sustain longer stretches of promise and decrease the mistakes that have become his unraveling.
"Shane has been a guy that will look great and do things completely right for seven plays, if you take 10 plays in a game, and not concentrate for three plays," Sanford said. "The challenge for him to be a really good quarterback is to play all 10 of those with a high concentration level.
"I feel like he's improving in that area. It's hard to tell how he's going to react in a game. You can't tell that until you play the game."
Improving that concentration has been one of the major undertakings in the preseason.
"We talk to him about it all the time," Sanford said. "It's something he has to discipline himself to do, he has to remind himself to do."
Steichen said he thinks he has made progress.
"I think my focus has gotten a lot better," he said. "Now I've got the hang of the offense. I'm studying film every chance I get. If I'm not in class, I'm in the film room. I've got to stay consistent with that, and I've got to stay consistent on the field."
But no matter how consistent he is, mistakes will happen, a reality for all quarterbacks.
How Steichen responds will be a key. If he comes apart as he has in the past, all the hard work could be for naught. If he quickly forgets such errors and moves ahead to the next play, he could become a more polished quarterback.
"I'm more mature," Steichen said. "I consider last year, that was my first year ever playing. Now that I've got that experience, I'm going to have confidence going into this season. I'm named the starting quarterback now, so I don't have to worry about another guy or anything."
His job was in jeopardy after last season when he completed 49.2 percent of his passes for 1,011 yards with seven touchdowns and 10 interceptions.
Steichen (6 feet 4 inches, 200 pounds) stood in the back of the room when Sanford said at his introductory news conference in December that quarterback was one of his chief priorities.
Then Steichen watched junior college transfer Jarrod Jackson sign early.
But Steichen embraced the situation and outperformed Jackson in the spring and preseason to win the job.
His coach saw enough to be impressed when the Rebels played at Utah last season. Though UNLV was beaten 63-28, Steichen had some of those positive stretches that too often gave way to mistakes. He directed four touchdown drives, rushing for a 25-yard TD on one, but completed 9 of 22 passes for 111 yards with two interceptions.
"I saw him run against us at Utah, and he's a good runner," said Sanford, who was the Utes' offensive coordinator. "He's a better runner than people think he is. He's probably faster than Alex (Smith)."
Smith, Utah's Heisman Trophy finalist, was the NFL's No. 1 pick this year.
Before becoming such a marquee player, Smith came from virtually nowhere, competing as the No. 3 quarterback in the spring of 2003.
"It's crossed my mind," Steichen said of Smith's rise under Sanford. "But, really, I've just got to go out and play and do my job. I think if I do my job and everyone else does their job, everything's going to take care of itself and we're going to have a good season."
j NOTE -- Backup linebacker Ryan Welter probably will be out at least a month with torn cartilage in his left knee.