In his final season of 2004, he became the top pro pitching prospect in the country, going 15–1, with a 1.62 earned run average (ERA), 213 strikeouts and just 21 walks in 144 innings.

A 2004 Los Angeles Times called him dominating, describing his pitching as overwhelming "batters with a fastball between 89 and 94 mph, a sharp slider and an improving curveball all thrown with the same three-quarter arm delivery.

[2] Weaver was originally speculated to be one of the top three overall draft picks in 2004; however, the bonus demands of his agent, Scott Boras, turned off several teams.

He and adviser Scott Boras don't seem to be backing down from a reported desire for Mark Prior money, and he could slide through the entire first round altogether.

Despite his success, when Bartolo Colón returned from the disabled list, Weaver was bumped out of the rotation and sent back down to the minors.

This was only the fourth time in major league history that a no-hit bid was unable to go nine innings because of the home team winning the game, and the first as a combined effort.

[8] Weaver made his first career relief appearance against the Boston Red Sox at Fenway Park in Game 3 of the 2008 ALDS.

During Spring Training, he added a two-seam fastball to his repertoire after instruction from teammates Scot Shields and Joel Piñeiro.

[11] After the departure of John Lackey to the Boston Red Sox through free agency, there was some uncertainty over who would assume the role of the club's ace.

On July 6, despite not having been initially selected, Weaver was chosen to replace CC Sabathia on the American League roster for the 2010 All-Star Game due to the latter's ineligibility to pitch.

He joined Torii Hunter as the only Halos representing the host club for Angel Stadium's third Mid-Summer Classic, though he did not pitch in the game.

[13] The All-Star selection was well-deserved, as Weaver posted the best season of his short big league tenure thus far.

Despite the uncertainty over the role earlier in the season, Weaver embraced and ably fulfilled his new responsibility as the team's ace in 2010.

[15] Through the All-Star break on July 10, Weaver had an 11–4 record and 1.86 ERA in 140.1 innings, complemented by 120 strikeouts, just 31 walks, and a WHIP of 0.91.

On July 11, manager Ron Washington announced that Weaver would start the 2011 All-Star Game for the American League.

[16] In his one scoreless inning of work at the All-Star Game, Weaver had one strikeout (Carlos Beltrán), one walk (Matt Kemp) and no hits.

Weaver exchanged words with Guillen as he made his trot around the bags, and the home plate umpire issued warnings to both dugouts.

Avila ducked, and Weaver was immediately ejected from the game by home-plate umpire Hunter Wendelstedt, along with Angels Manager Mike Scioscia.

[17] Weaver finished the 2011 season with an 18–8 record and a 2.41 earned run average, which was edged out by Justin Verlander's 2.40 for the American League lead and was the lowest ERA by an Angel since Chuck Finley's 2.40 in 1990.

[19] Nearing the end of the season and with the Angels still in contention for a postseason spot, Weaver for the first time in his career won his twentieth game, on September 28 against the Texas Rangers.

[20] On April 7, 2013, Weaver suffered a fractured left elbow following a base hit by Mitch Moreland of the Texas Rangers.

[21] In his final season before free agency, Weaver continued to struggle with velocity and command, ending with the highest ERA of his career (5.06).

[23] Weaver made his debut with the Padres on April 6, giving up four runs in five innings and taking a loss against the Los Angeles Dodgers.

Both are active supporters of Special Olympics Southern California and Weaver serves as a Sports Ambassador for the organization.

[29] While playing for the Angels, Weaver would write the letters "NA" on the back of the pitcher's mound in memoriam of Adenhart after his death in 2009.