SAN ANTONIO -- South Carolina coach Dawn Staley was already thinking ahead after getting her 500th career win in the first round of the women's NCAA tournament.
"Five hundred one sounds nice, and on and on and on,'' Staley said.
South Carolina (23-4) grabbed the lead for good when it closed the first half with a 16-5 run after a timeout by Staley, who had started the second quarter with what she called a "funky lineup'' on the court.
"She just kind of talked about how we haven't played in two weeks, so we're just trying to get back in the flow. Don't worry about it. Just keep going, pushing,'' Saxton said of the coach's message during that timeout. "So that's just what we did. We just went out there and kept playing our game.''
The Gamecocks were national champs in 2017, when the Final Four was last played in Texas. They went 32-1 last season, spent the final 10 weeks at No. 1 and Staley was the AP coach of the year; but they didn't get a chance to win another title because the NCAA tournament was canceled because of the pandemic.
Next up for South Carolina is a matchup with Oregon State on Tuesday.
Staley is 328-102 in her 13 seasons at South Carolina, after going 172-80 in eight seasons at Temple. The SEC tournament champion Gamecocks are in their ninth consecutive NCAA tourney, winning in the first round each time.
"I mean, it's a great milestone,'' Staley said. "It means that you've been in the game a long time. And more than likely, you've had some great players that allows you to get to this point, from my Temple days to my South Carolina days. ... I'm forever indebted to them.''
It was Boston's 28th double-double in 60 career games. The All-American forward from the U.S. Virgin Islands had 15 points and 10 rebounds at the break. She made a 3-pointer at the buzzer, which came right after Mercer's Jada Lewis hit a 3 to end an 11-0 run by the Gamecocks.
After being down 11 points in the first quarter, Mercer opened the second with a 15-4 run. It got even at 27-all on a long jumper by Amoria Neal-Tysor, prompting a timeout by Staley, not long after Neal-Tysor had a steal and a breakaway layup.
Mercer coach Susie Gardner said her team had two objectives going into the game: Slow the ball down and not let the Gamecocks get easy transition layups, which the Bears did with some effectiveness; and keep South Carolina from getting offensive rebounds.
"We did a really poor job with that, and that was the difference in the game,'' Gardner said. "They beasted us on the offensive glass.''
With Boston, Saxton and 6-foot-4 forward Laeticia Amihere (11 points, eight rebounds) on the front line, South Carolina had a 52-27 rebounding edge that included 21 offensive rebounds and 23 second-chance points. The Gamecocks had a 42-16 scoring advantage in the paint.
The Associated Press contributed to this report.