“Earl was the first guy to use the radar guns to make in-game decisions,” said Dan Duquette, a general manager for the Expos, Red Sox, and Orioles who started his baseball career with the Brewers in 1980 and observed a scout with a radar gun giving Weaver hand signals to indicate velocity. He asked Weaver what he was doing. Weaver responded: “Danny, I’m trying to figure out if my pitcher is done for the day before the hitter tells me by hitting a three-run homer.”