What we learned as Jonathan Kuminga dazzles in return despite Warriors’ loss

SAN FRANCISCO – If first impressions are everything, the Warriors could be in for a rude awakening without Jimmy Butler. In their first game following Butler’s devastating season-ending torn ACL, which also was the second night of a back-to-back, the Warriors were down by 20 points at halftime, trailed by as much as 30 points and fought back in an eventual 145-127 loss against the Toronto Raptors on Tuesday at Chase Center. The effort they displayed in the second half is the exact output the Warriors will need sans Butler.Steph Curry sitting the entire fourth quarter usually is a positive, but not Tuesday night to end an eight-game homestand. The Raptors’ defense frustrated Curry in a game where he scored just 16 points on 6-of-16 shooting and 2 of 7 behind the 3-point line. The lone Warrior with a worse plus/minus than Curry’s minus-25 was Draymond Green’s minus-27 in 22 minutes.After not playing the previous 16 games, Jonathan Kuminga was given the green light and was all gas with 20 points in 21 minutes on 7-of-10 shooting. Only Buddy Hield, 25 points on 7-of-8 shooting, including a perfect 6 of 6 on threes and 5 of 5 on free throws,...