With the Australian Open just over a week away, Bouchard said she didn't think the injury was serious.
"I played great throughout the three sets and Sasha probably dropped his level a little bit in the second and third sets", he said. "There was a really sharp pain".
Bouchard is scheduled to compete at next week's Hobart International ahead of the Australian Open, which begins January 15.
Mertens beat Eugenie Bouchard, who sustained a suspected buttocks injury, 6-4, 6-4, before Goffin defeated Vasek Pospisil 6-2, 6-4.
George RR Martin's 'Nightflyers' Scores Series Order at Syfy, Sets Cast
Agatha Matheson , alongside Eoin Macken as Karl D'Branin, David Ajala as Roy Eris , Sam Strike as Thale and Maya Eshet as Lommie . It's set in Martin's "Thousand Worlds" universe, which despite containing a thousand worlds, could not find room for Westeros.
Australia couldn't make it through to the final of the Hopman Cup in Perth, but Thanasi Kokkinakis came away with one of the biggest wins of his career over Alexander Zverev on Friday night.
Kokkinakis helped Australia to win the first set of the doubles but Kerber maintained her fiery dominance to steer Germany to a 1-4 4-1 4-3 (3) victory.
Zverev praised two-time major victor Kerber's performance, admitting he nearly lost the match for Germany.
Federer produced some brilliant play in the second set as he unceremoniously put Zverev back in his place, and the 20-year-old was unable to match his opponent. I'm going to the physio now to see what it is.
Germany needed to win the tie against Australia to book a spot in the final against Switzerland and knock Belgium out.