Milpitas volleyball player Julia Grigorescu is the Bay Area News Group’s girls high school athlete of the week and Serra water polo player Sean Coffin is the boys athlete of the week for Sept. 23-28.

In online voting that ended at 5 p.m. Wednesday, Grigorescu finished with 41.65% of the votes. Fremont-Sunnyvale field hockey player Maddie Dhillon took second at 30.20%.

In the boys poll, Coffin had 34.13% to finish ahead of Menlo School cross country runner Landon Pretre, who was second at 27.9%.

Coffin, a senior, scored three goals and had an assist and two steals in Serra’s 17-3 win over Gunn. He added three more goals and another assist in a 14-7 loss to Bellarmine.

Grigorescu, a junior, totaled 23 kills, eight aces, 30 digs and 26 serve receptions in wins over Cupertino and Wilcox.

To nominate an athlete for next week’s poll, email highschools@bayareanewsgroup.com by Monday at 11 a.m. Please include stats and team results.

Votes by email do not count. Only votes submitted through the online poll on the Mercury News and East Bay Times websites will count.

Winners are announced each Friday on the Mercury News and East Bay Times websites and in the print edition of the Mercury News and EB Times sports sections.