(Correct's Lawson's first name in paragraph eight, Ocon detail in paragraph 10) By Angelica Medina MONTREAL, May 22 : Mercedes' championship leader Kimi Antonelli was fastest in sole practice for the Canadian Grand Prix sprint weekend on Friday as the team made a strong start with their first major upgrade package of the Formula One season. The 19-year-old Italian, chasing a fourth win in a row, lapped the Circuit Gilles Villeneuve with a best time of one minute 13.402 seconds in bright