The Petaluma Valley Little League has emerged as the dominant league in District 35 All-Star play. The Valley won both the Major League (11-12-year-olds) and 10-year-old tournaments and still has a chance for the 11-year-old title.

Cole Shimek delivered a walk-off hit in the sixth inning to power the Valley Major League to a 7-6 win over Santa Rosa American in the championship game of the Major League Tournament played at Murphy field Sunday.

Petaluma Valley defeated Mark West, 18-0; Cloverdale, 12-1; Rincon Valley National, 7-5; and Santa Rosa American, 8-3 in its run to the championship.

Petaluma Valley's 10-year-olds used solid defense and strong pitching from Mario Taormina to defeat El Molino, 5-1, in the district championship game played in Healdsburg.

The Valley took care of Westside, 11-0; Petaluma American, 9-0; Petaluma National, 12-2; and El Molino, 13-5, on its run to the championship.

Petaluma National has the upper hand in the 11-year-old tournament being played at Westside Little League in Santa Rosa after riding the pitching and two home runs from Cole Santander to a 5-2 win over Petaluma American in a winners' bracket semifinal game.

Petaluma American plays Petaluma Valley in a losers' bracket semifinal game tonight, with the winner playing Petaluma National Tuesday evening. As an undefeated team, Petaluma National needs only to win that game for the district championship, while its opponent must win twice.

The Petaluma Americans were the last Petaluma team standing in the Junior League (13-14-year-olds) tournament being played at the Rancho Cotati diamond in Cotati, but went down in a wild slugfest Saturday, losing to El Molino, 17-11. Tonight's tournament championship game will feature Mark West against Rincon Valley, with Mark West going into the game unbeaten.

For a complete roundup of all the tournaments, including stories on the key games and a look at where the winners go next, see Thursday's Petaluma Argus-Courier.