Through the first 20 NHL games of his career Geekie has 3 goals, 3 assists, 6 points
For comparison here's some other players through their first 20 games who were 19 or 20 years old
Brett Connolly: 4 goals + 3 assists = 7 points
Connolly made his NHL debut at age 19. He started off well, but after 20 games he started to hit his rookie wall. Yzerman sent him away from the team to play in the World Juniors, and he would score 0 goals, and 8 assists through the remaining 48 games of his rookie season.
Jonathan Drouin: 1 goal + 10 assists = 11 points
Drouin - another 19 year old that Yzerman kept on the Bolts because he was too good for juniors, but not old enough for the AHL. 11 points in his first 20 games, but only 4 goals in 70 games his whole rookie year. His 28 assists though are one of the more productive numbers by a Lightning rookie in franchise history even with bottom line minutes next to guys like Brian Boyle, Brendan Morrow, JT Brown, and rookies Ceddy Paquette, and Vladdy Namestnikov
Nikita Kucherov: 6 goals + 3 assists = 9 points (nov- jan)
20 years old like Geekie, but Kucherov did not make his NHL debut until Nov 25th after spending the first 17 games in Syracuse.
Anthony Cirelli: 5 goals + 6 assists = 11 points (18 games)
Like Kucherov, Cirelli didn't start right out of training camp, not making his debut until March 1st, spending the first 51 games of the year in Syracuse. His 11 points with the Bolts are in the Bolts final 18 games down the stretch which you could argue are much harder than a team's first 18 games in October and November.
Brayden Point: 2 goals + 5 assists = 7 points
20 years old, right out of camp, getting some top 6 minutes and pp time to start - this is probably the most similar experience to Geekie's. Only 2 goals to start the year, but he finishes with 18 goals in 68 games