» Josh Rosen looked very, very good in his first start at quarterback for UCLA. We wrote a bit about this elsewhere, but here are some more stats on the true freshman’s debut on Saturday versus Virginia:

— Rosen is first true freshman to start the season at quarterback for UCLA, and the seventh one to do it at any point in the season. None of them even came close to what he did.

2015: Josh Rosen v. Virginia, W 34-16 — 28/35, 351 yards, 3 TD
2002: Drew Olson @ Washington, W 34-24 — 13/27, 189 yards
2002: Matt Moore v. Stanford, W 28-18 — 7/19, 142 yards, 1 TD
1995: Cade McNown v. Oregon, L 38-31 — 12/24, 183 yards, 1 INT
1992: Ryan Fien v. Arizona State, L 20-0 — 4/7, 18 yards
1979: Tom Ramsey @ Oregon, W 35-0 — 4/6, 64 yards, 2 TD, 1 INT
1974: Steve Bukich @ Washington, L 31-9 — 5/14, 78 yards, 5 INT

— Of the last 15 quarterbacks to start for the Bruins, Rosen had the highest debut-game marks in completions (28) and passing yards (351). He also tied for the lead with three touchdowns.

— Rosen went 6 for 8 for 116 yards on third downs.

— Rosen’s performance happened 1,101 days after Brett Hundley’s debut. Hundley didn’t have the same day through the air, going 21 of 28 for 202 yards, two touchdowns and a pick — but he also broke out this 72-yard scoring run on his very first snap.

Rosen’s first snap would have been a 75-yard touchdown to Kenneth Walker III, but the receiver couldn’t hang on to the ball. Offensive coordinator Noel Mazzone said the pass glanced off the defender’s finger, but it still looked catchable.

» Running back Myles Jack looks like he’ll still be a goal-line threat this season. He took two carries for seven yards, punching the latter in for his 11th career touchdown.

Defensive tackle Kenny Clark also got some love in the end zone, scoring his first career touchdown when he caught a three-yard pass from Rosen.

UCLA defensive players have scored 17 offensive touchdowns since 2012.

» Who will lead UCLA in receiving yards? The Bruins haven’t had a 1,000-yard receiver in Noel Mazzone’s offense, and if Saturday was any indication, that streak will continue through 2015.

That’s not necessarily a bad thing. After a game in which nine players had multiple catches — and six had anywhere from 40 to 58 yards — UCLA could conceivably end the year with three 600-yard receivers. Jordan Payton is still the best bet to end up with the highest numbers, but the race should be closer than it was a year ago.

» UCLA was expected to enter the season with a formidable backfield rotation led by reigning Pac-12 rushing champion Paul Perkins. That didn’t manifest itself in Week 1, as Virginia stacked the box early to try and shut down the run game — at least, they did until Rosen completed five straight passes for UCLA’s first touchdown.

Perkins eventually got 59 rushing yards on 14 carries (to complement his team-high 58 receiving yards), so don’t worry too much about him. Now that opposing teams realize they need to account for Rosen’s arm more, the star tailback should get his numbers up.

The bigger concern was the absence of backup Nate Starks, who did not dress on Saturday and was reportedly sitting in the stands. The sophomore was coming off a very impressive offseason, and was in line for a significant complementary role behind Perkins. Head coach Jim Mora declined to explain his absence.

Soso Jamabo was the first back off the bench, and finished with 79 yards on nine carries. Most of that came in garbage time, however, and he had also had the benefit of some huge holes. Fellow freshman Bolu Olorunfunmi had 30 yards on five carries.

» Five true freshmen saw the field for the Bruins on Saturday: Rosen, Jamabo, Olorunfunmi, as well as defensive back Octavius Spencer and tight end Chris Clark (who played late and sparingly).

Mora said he and his staff had also planned to use true freshman guard/center Fred Ulu-Perry, but had run out of time before they had a chance.