Alexander-Arnold came off with 20 minutes to go at Bournemouth on Saturday after pulling up with discomfort in his thigh.
Luke Glendening, Nikita Kucherov and Ryan McDonagh also scored for Tampa Bay while Andrei Vasilevskiy finished with 25 saves.
Kevin Fiala scored twice, Phillip Danault had a goal and an assist, and the Los Angeles Kings beat the Carolina Hurricanes ...
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