Each week during the high school sports season, High School on SI will gather the best performances across the country with the help of fans, readers and staff. Now, it’s your turn to choose a standout among the pack, the best of the best. Here are the nominees for High School on SI’s National High School Girls Athlete of the Week for April 27-May 3. Voting closes on Sunday, May 10 at 11:59 p.m. (Pacific Time). The winner will be announced in the following week’s National High School Girls Athlete of the Week post.  The poll is below the write-ups on each athlete. Want to nominate an athlete? Email Bob Lundeberg at bob.lundeberg@gmail.com High School on SI National Girls Athlete of the Week nominees 1. Mariah Anderson, sr., United South Central (Minnesota) softball Anderson dazzled with 19 strikeouts and surrendered just one hit in a 6-0 victory over Janesville-Waldorf-Pemberton. 2.…