TAMPA, Fla. – Nikita Kucherov became the fifth player in NHL history to pile up 100 assists in a season Wednesday night at Amalie Arena. He joins Wayne Gretzky (11 times!), Mario Lemieux (once), Bobby Orr (once) and Edmonton’s Connor McDavid, who picked his 100th assist Monday night, in achieving the plateau. Kucherov got the primary assist on Brayden Point’s powerplay goal at 17:05 of the second period to give the Lightning a 4-1 lead over the Maple Leafs. The 30-year-old Russian headed into Wednesday’s regular-season finale having produced 11 games of at least three assists this season, incl…