Emma Meesseman tied a career high with 30 points in her second consecutive exceptional performance in a matter of days, guiding the Mystics to a 103-91 victory in Washington on Thursday night.

Cambage's Aces have now lost four of five meetings against the Mystics this year between the regular season and playoffs.

Natasha Cloud added 18 points and 11 assists while Elena Delle Donne - who was announced as the season's MVP and accepted the award from league commissioner Cathy Engelbert prior to tip-off - scored 14 points and grabbed 10 rebounds for the home side.

Kelsey Plum added 19 points and 10 assists for Las Vegas, who fought back from an 11-point second-quarter deficit to take a brief lead in the third, only to fade late.

The Mystics were swept by Seattle in the 2018 finals but Meesseman didn't play at all that season, taking a summer hiatus to focus on playing for the Belgian national team.

In her second time reaching this stage of the postseason, she scored what was a playoff career high of 27 points in the series opener before surpassing that Thursday, when her late three-pointer stretched the Mystics' lead to double digits for good at 98-86.

The No.1 seeds can wrap up the best-of-five series and seal a return to the Finals on Sunday with a win in Las Vegas.

Australian Associated Press