Jack Ahcan. | Photo by Mitchell Leff/Getty Images The Providence Bruins await their first round opponent after winning the Atlantic Division title. Meanwhile, the Maine Mariners face Reading in a rematch of last year’s first round series. What a time to be a Boston Bruins fan. All three teams in the organization qualified for postseason play, with AHL Providence winning the Atlantic Division and the ECHL Maine Mariners finishing third in a tightly-contested North Division race. Providence closed the regular season strong, rebounding from a 7-2 loss at the Springfield Thunderbirds (St. Louis Blues) last Friday with a 5-3 win over the Bridgeport Islanders (New York Islanders) and a 7-3 win over Springfield in the regular season finale. With that final victory, Providence enjoyed one of its best seasons ever, with many drawing comparisons to the 1999 Calder Cup Championship team. The #AHLBruins 1️⃣8️⃣ regulation losses this season are the…