ROSEMONT, Ill. – Maya Moore had been unstoppable on offense through Minnesota’s first four games. It was her stellar defense that kept the Lynx undefeated.

Moore and the defending champion Lynx held Elena Delle Donne to 16 points to remain perfect with a 75-72 victory over the Chicago Sky on Monday in a showdown of undefeated teams.

“Coming into the game, my biggest concern was defense,” said Moore, who scored 14 points — well short of her 33.8 average through four games. “I knew I was going to be matched up against Elena and that was my main focus and what my effort was going into.”

Delle Donne, who entered the game averaging 23.5 points, was 7 for 19 from the field.

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Lindsay Whalen led the Lynx (5-0) with 22 points.

Jessica Breland contributed 16 points and 15 rebounds for Chicago (4-1).

Former Gonzaga standout Courtney Vandersloot, a graduate of Kentwood High School in Covington, had eight points and a game-high 10 assists for the Sky.

Delle Donne tied the score at 63 on a jumper with 6:33 to play and added a putback for a 65-63 lead with 5:03 left.

But the Sky’s advantage didn’t last as Tan White had back-to-back scores to give the Lynx a 67-65 lead.

Delle Donne launched an off-balance three-point attempt as time expired, but the potential game-tying shot missed.

Chicago was 6 of 16 on three-point shots, compared with 2 of 8 for the Lynx.