|Born||December 2, 1957|
|Died||31 March 2019 (aged 61)|
|Highest ranking||45 (1983/1984)|
|Highest||126 (1985 Canadian Professional Championship)|
|Best ranking finish||Last 32 (1982 Professional Players Tournament)|
Born in 1957, Jonik first played competitive snooker in 1978 at the Canadian Professional Championship, and turned professional in 1979.
After several seasons on the tour, Jonik reached the last 32 at the 1982 Professional Players Tournament, defeating Welshman Doug Mountjoy 5–3 in his last-64 match before being whitewashed 5–0 by Tony Meo.
Starting the 1983/1984 season ranked 45th, Jonik reached the final of the non-ranking Canadian Professional Championship that year, beating Bob Chaperon, Jim Wych and Cliff Thorburn to set up an encounter with Kirk Stevens. Their match went to a deciding frame, in which Stevens prevailed to win the final, 9–8, and the tournament.
In the 1984/1985 season, Jonik defeated Jack McLaughlin 6–2 in the British Open, facing the veteran John Spencer in the last 64. Although Jonik came close to winning the third frame before a 61 break by Spencer, the three-time World Champion was consummate in beating him 6–0.
During the 1988/1989 season, Jonik played only in that year's Canadian Professional Championship; entering at the quarter-final stage after his opponent Gino Rigitano's withdrawal, he played Thorburn in his first match, leading 4–2 but losing 4–6.
The match against Thorburn was Jonik's last at competitive level. He did not play at all the following season and was relegated from the tour, ranked 127th, at its conclusion in 1990.
Non-ranking finals: 1 (1 runner-up)Edit
|Outcome||Year||Championship||Opponent in the final||Score|
|Runner-up||1983||Canadian Professional Championship||Kirk Stevens||8–9|