Open Extended ReactionsLOS ANGELES -- Alyssa Thomas had 12 points, 16 rebounds and 15 assists for her WNBA single-season record seventh triple-double, and the Phoenix Mercury beat the Los Angeles Sparks 92-84 on Tuesday night. Thomas secured her 18th career triple-double with 2:50 left on a shot in the lane. Thomas, who had 13 points, 12 rebounds and 16 assists in a win Friday, also became the first player in WNBA history to post at least 10 points, 15 rebounds and 15 assists in a game. She is the first player in WNBA or NBA history with at least 12 rebounds and 15 assists in consecutive games. No other player in WNBA history has more than one triple-double in a calendar month, and no other player in WNBA history has more than four career triple-doubles.