Weaver will be replacing New York Yankees ace CC Sabathia, who manager Joe Girardi says will not be able to pitch due to the way their rotation schedule is playing out.
Weaver will probably not be able to pitch for the same reason, unless tonight's game against the Chicago White Sox is postponed. The game is currently in a 45-minute rain delay.
Weaver (8-3, 2.82 ERA, 1.06 WHIP), was a controversial exclusion from the squad. He currently leads both leagues in strikeouts and quality starts.
Although it doesn't look like he is going to get to play, the move would at least allow Weaver to be acknowledged in front of his hometown fans as an All-Star. The Midsummer Classic will be played in Anaheim.
This will be the 27-year-old righthander's first All-Star appearance.
Weaver has the best winning percentage of any pitcher in baseball over the past five seasons at .663.