IRVINE, Calif. -- Jared Goff, the No. 1 overall pick who is being groomed to eventually become the Los Angeles Rams' starting quarterback, took a handful of snaps with the first-team offense during Wednesday's practice and is expected to do so in an actual game on Saturday.

Rams coach Jeff Fisher said he wants to give Goff a series or two with the starters in the second week of the preseason schedule, when the Kansas City Chiefs visit Los Angeles Coliseum for a game that begins at 6 p.m. PT. Case Keenum still took most of the first-team reps from UC Irvine and "is still clearly ahead" of Goff on the depth chart, Fisher said.

Goff's first-team reps came mostly on running plays, though he did complete a couple of short passes to the outside.

"I feel like every day I am more comfortable, more fluid, more in a rhythm; stuff becomes more natural every day," Goff said. "It’s been going well."

But Goff still has some growing pains.

On Tuesday, he threw a couple of picks and fumbled a couple of snaps, at one point even getting tripped up while coming out from under center. On at least a couple of occasions Wednesday, Goff -- accustomed to running a no-huddle offense and taking almost every snap from the shotgun at Cal -- didn't get the ball out quickly enough on standard three-step drops. But he also completed a 40-yard pass to Bradley Marquez, his trusty training partner, during 7-on-7 drills and later effectively orchestrated a two-minute drill with the second unit.

"I thought he was fine," Fisher said of Goff, as he usually does. "I need a card to hold up that says, 'Jared was fine,' and put it back down."

Asked what it is he would still like to refine, Goff said: "I don't know if I can pinpoint one thing. It’s trying to feel more comfortable every day with everything we do. It’s not one particular thing. When we’re in a certain drill I’m working on the one particular thing, and then when we go with the team I’m just trying to play."

Goff believes he has "grown exponentially" since the start of organized team activities on May 31 and that Week 2 will come easier because "it won't be all new."

Fisher said he measures Goff's performance independent of Keenum's, "But we have to be realistic, because who's going to eventually give us the best chance to win? And when is that going to be?"

Goff relieved Keenum and went 4-for-9 for 38 yards in the Rams' 28-24 victory over the Cowboys last weekend, with two of his passes dropped by rookie receiver Pharoh Cooper. On his second pass, the 21-year-old rookie didn't anticipate the blitz, was hit while trying to throw downfield and threw an interception. That hit, by Cowboys linebacker Derek Akunne, led to a sore non-throwing shoulder that forced Goff to sit after just two series.

"I'm definitely excited to get back out there and get a chance to compete and show what I can do," Goff said.

He was asked how close he is to becoming the professional quarterback he wants to be.

"Oh, not as close as you’d like," Goff said. "Every day you try to get better, and I don’t think I’ll ever be complacent and happy with where I am, no matter what. You always want to get better, and I think that will remain true for the rest of my career."

Some additional notes from Wednesday's practice, the second consecutive one with full pads ...