Derek Bauer , Millis: The senior mashed a walk-off three-run homer in the bottom of the eighth inning to beat Westwood, 4-1.

Mike Santos , Hudson: In the eighth inning of his team’s 6-5 win over New Bedford, the senior hit a one-out single, stole second, and then scored the game-winning run on a single by sophomore Ben Palatino.

Shannon Smith , Milford: The Kentucky-bound senior tossed a perfect game on Wednesday, a 15-0 five-inning win over Stoughton in which she struck out 13 of the 15 batters she faced. It was her fifth perfecto and the 21st no-hitter of her career.

Kevin Superko , Wellesley: The senior righty threw a no-hitter, striking out nine, to beat Milton last week, 4-0. His gem snapped Wellesley’s three-game losing streak.

Roxy Vento , Arlington: With a three-run homer in the seventh inning, the sophomore catcher led the Spy Ponders to a walk-off win over Woburn, 10-7.

Perry’s Top 10 baseball teams

(Records through Tuesday, next game listed)

1. Newton North (9-0) vs. Natick, Mon., 3:45

2. St. John’s High (7-1) vs. Holy Name, Mon., 3:30

3. Medfield (7-0) vs. Bellingham, Mon. 3:45

4. Franklin (6-1) at Foxborough, Mon., 3:30

5. Nashoba Regional (5-2) vs. North Middlesex Regional, Mon., 4

6. Shrewsbury (5-2) at Wachusett Regional, Mon., 4

7. Hudson (7-1) vs. Quabbin Regional, Mon., 3:30

8. Arlington Catholic (6-1) vs. Bishop Fenwick, Mon., 3:30

9. Lincoln-Sudbury Regional (4-3) vs. ­Acton-Boxborough Regional, Mon., 4

10. Wellesley (5-4) at Brookline, Mon., 4

Perry’s Top 10 softball teams

(Records through Tuesday, next game listed)

1. Milford (9-0) vs. North Attleborough, Mon., 3:30

2. King Philip Regional (7-1) at Stoughton, Mon., 3:30

3. Concord-Carlisle (6-0) at Bedford, Wed., 4

4. Newton North (7-1) at Natick, Mon., 3:45

5. Acton-Boxborough Regional (6-1) at Lincoln-Sudbury Regional, Mon., 4

6. Hopkinton (6-1) at Medway, Mon., 3:45

7. Bellingham (5-1) at Medfield, Mon., 3:45

8. Hudson (6-0) vs. Quabbin Regional, Mon., 3:30

9. Arlington Catholic (8-1) at Bishop ­Fenwick, Mon., 3:30

10. Newton South (5-0) at Boston Latin, Mon., 4

Softball Game to Watch