Carrying a 7-2 lead into the sixth inning, it looked as if No. 20 Boston College baseball would comfortably cruise to a midweek triumph over UMass Lowell on Tuesday night. But back-to-back, two-run innings for the River Hawks forced the Eagles into a pressure situation. In the bottom of the sixth, Joseph DeLanzo and Scott Donahue each recorded an RBI single, cutting Lowell’s deficit to 7-4. Sean Hard, who ultimately picked up the win for BC, came in for John Kwiatkowski in the bottom of the seventh, but the River Hawks’ momentum did not fizzle out. A Brayden Cali triple through the left side scored Rowan Masse and Tyler Kisling to make it a one-run affair, and the Eagles desperately needed a response. And that is exactly what they got from Hard, who silenced Lowell’s lineup in the final two frames to guide BC (34-14, 16-8 Atlantic Coast) to its 13th midweek triumph of the year by a final score of 7-6.…