SAN JOSE >> San Jose Sharks center Macklin Celebrini electrified a sold-out SAP Center crowd during his dazzling NHL debut.

Now it’s a matter of when he’ll have the opportunity to do it again.

One night after playing in his first NHL game, Celebrini missed Friday’s practice with an injury, leaving his status for today’s game against the Anaheim Ducks in question.

Sharks coach Ryan Warsofsky said after Friday’s practice that Celebrini had a lower body ailment and was being evaluated, and could not say whether the 18-year-old center might have to miss the team’s second game of the regular season.

Warsofsky also wouldn’t confirm whether Celebrini’s lower-body injury is related to the one that kept him out for part of the preseason. In an Oct. 1 game against the Utah Hockey Club, Celebrini aggravated a lower-body injury, left midway through the second period, and didn’t play in the Sharks’ final two exhibition games.

Celebrini scored the first two points of his NHL career on Thursday before a raucous crowd as the Sharks built a three-goal lead over the St. Louis Blues in the second period. Celebrini scored the first goal of the Sharks’ season at the 7:01 mark of the third period and later assisted on a goal by Tyler Toffoli.

But the Sharks let up and allowed three goals in the third period, including the tying goal with 47 seconds left in regulation, before Brayden Schenn scored just 45 seconds into overtime to give the Blues a 5-4 win.

Celebrini had 17:35 of ice time in the game. His last shift of the third period came with less than four minutes to go, and he was on the ice for the start of the 3-on-3 overtime. He spoke with reporters afterward, saying his NHL debut was “everything I thought it would be for my first game, and it was an amazing experience and one I’ll cherish for my whole life.”

Celebrini, at 18 years and 119 days old, is the youngest Sharks skater to have two points in his NHL debut. He replaces Marco Sturm, who was 19 years and 26 days old on Oct. 4, 1997, when he had a goal and an assist in a game against the Chicago Blackhawks.

On his goal, Celebrini took a pass from William Eklund as he entered the Blues’ zone and took a couple of strides before he turned around in front of Blues defenseman Ryan Suter and sent the puck toward the middle of the ice. The pass was intended for Eklund, but the puck went off Blues defenseman Matthew Kessel and slid past goalie Joel Hofer for a 1-0 Sharks lead 7:01 into the first period.

Celebrini didn’t know the goal was his until Eklund told him it was.

“Because I was like, ‘Nice goal,’ and he was, ‘I didn’t score, you did,’ ” Celebrini said Thursday night. “I thought he was just super excited that he scored, but I guess he was happy for me.”

Celebrini’s goal not only set off the capacity crowd at the Shark Tank, it was also the second-fastest by a No. 1 overall pick in his NHL debut in league history. Mario Lemieux, selected first overall by the Pittsburgh Penguins in 1984, scored 2:59 into his debut on Oct. 11, 1984. Both players scored on their first career shot on goal.

“Good for him to get one early, get that off (his) back,” Sharks forward Luke Kunin said of Celebrini. “He’s a special player, right? So we want him to be comfortable and keep getting better every game. He’s a huge part, obviously, for us. So I thought he was really good.”

Without Celebrini on Friday, Warsofsky moved Mikael Granlund into the top-line center spot as the team tried to correct the issues that led to the bitter overtime loss. Granlund centered a line with Toffoli and William Eklund, with Danil Gushchin cycling in and out. Klim Kostin took Granlund’s spot on the second line with Will Smith and Fabian Zetterlund.

Warsofsky said he hadn’t finalized any lineup decisions, whether or not Celebrini is able to play.

Thanks in part to the Blues’ forecheck, the Sharks had a handful of puck management issues early on and were outshot 21-7 in the first 16 minutes of the first period. San Jose found its game in the second period, swarming the puck and creating more chances as they outshot the Blues 17-7.

The Sharks felt they sat back too much in the third period, especially in the first few minutes as St. Louis scored twice in the first 6:11 to cut San Jose’s lead to one.

“Those first five minutes of the third period are crucial,” Warsofsky said. “You can’t give them any hope. You can’t give them any will, and we did the exact opposite. We came out on our heels.

“You could just kind of have a sense it was kind of coming, and a young team like that, to go through that is a learning experience, but an experience that we need to quickly get our heads around. We’ll have some sort of lead again (and) we have to know how to play in that situation.”

ASKAROV TO PLAY >> Goalie prospect Yaroslav Askarov will start a game for the San Jose Barracuda this weekend when the Sharks’ AHL affiliate plays a pair of road games against the Ontario Reign to open the regular season.

The 22-year-old Askarov, who missed most of Sharks training camp with a lower-body injury, was assigned to the Barracuda on Oct. 4 and has practiced with the team all week without any issue. Askarov’s last game was during the Calder Cup playoffs with the Milwaukee Admirals on May 24.

“That’s why I’m ready to go and so excited,” Askarov told Bay Area News Group on Friday before the team left for Southern California.