The Angels broke out the disco ball in the clubhouse, and why not? That was quite a party. Mike Trout, the guest of honor, became the youngest player in American League history to hit for the cycle. Josh Hamilton, the birthday boy, enjoyed two rounds of serenades from the crowd. The Angels posted their most lopsided victory of the season, a 12-0 rout of the Seattle Mariners. The fans even went home with party favors — Mike Trout pint glasses, in honor of a player of legal drinking age for all of nine months. They toasted him with a curtain call, the first of his career. The cycle was the first of his life — “high school, Little League, everything,” he said. He is 21 and he has achieved so much so soon. There is so much more in his future, and no one is shy about predicting it. “If I were a betting man,” Angels Manager Mike Scioscia said, “I’ve got to believe there’s another cycle in his career somewhere.” Trout even spotted the Mariners an out. He struck out in the first inning, then singled in the third, tripled in the fourth and doubled in the sixth. As he stood in the outfield in the eighth inning, he said, he realized he was a home run from the cycle. He decided he would not swing at the first pitch. That would be pushing it. But he got up, took two balls, then took a mighty swing. He hit the ball to right-center field, and deep. “In that alley, at night, it’s tough to get the ball out,” Trout said. But he did, sending the crowd into delirium and his mother to Twitter. “One proud Mama!!!” Debbie Trout tweeted. “Standing ovation at the Big A!!! TROUTSTANDING!!!”