Washington — Alyssa Thomas had 22 points and 10 rebounds, DeWanna Bonner added 17 points and the Connecticut Sun held off the Washington Mystics 68-64 on Tuesday night in the WNBA.

It was the 23rd double-double of the season for Thomas, tying the franchise single-season record set by Tina Charles.

Connecticut led 63-57 with 6:21 remaining after Tyasha Harris made a 3-pointer.

But the Sun didn’t score again until Bonner sank a wide open 3-pointer with 1:37 left for a 66-63 lead.

Thomas turned it over on the offensive end and fouled Shakira Austin with 34.7 seconds left. Austin made the first free throw and missed the second, but she secured the loose ball in the paint.

The Mystics had three more shot attempts during the possession but couldn’t get a shot to drop.

DiJonai Carrington finally secured a defensive rebound for Connecticut and Bonner sealed it with two free throws with 3.5 seconds left.

Tiffany Hayes added 12 points for Connecticut (23-10), which swept the season series from Washington 4-0.

The Sun being a three-game homestand on Thursday against the New York Liberty at Mohegan Sun Arena.

Connecticut also hosts the Los Angeles Sparks on Sunday at 1 p.m. and the Phoenix Mercury on Thursday, Aug. 31, at 7 p.m.

The Sun completed a difficult stretch by playing six of their last seven games on the road. They went 4-3, including two road wins this week (Connecticut defeated the Chicago 79-73 on Sunday night).

The Sun scored the opening nine points of the second half to extend their lead to 45-31.

Connecticut seemingly took control late in the second quarter when they closed the half on a 15-3 run to turn a 28-21 deficit into a 36-31 halftime lead.

Natasha Cloud scored 11 of her 19 points in the first quarter to lead Washington (15-18). Austin added 13 points. Elena Delle Donne (hip) did not play.