DeGrom (13-5) was nailed in the back of the right arm, just above the elbow, by Nick Williams' liner. He sailed through the first five frames without letting in a run then hit a wall in the sixth.
OUR PREDICTION: The Mets are 38-14 in their last 52 games in Philadelphia, are 43-18 in their last 61 games versus the Phillies overall, and are 13-4 in Lugo's last 17 starts.
DeGrom had been brilliant to that point and left after giving up four hits in 6 2/3 scoreless innings with nine strikeouts and no walks.
Conforto led off the second with an opposite-field drive to left-center for his 25th homer.
Smith is a touted 22-year-old first baseman who has 16 homers and a.905 on-base-plus-slugging percentage with Triple-A Las Vegas this season. Despite sporting a 4-2 road record, the 27-year-old Centenary product has been much less effective at home (3.51 ERA, .229 batting average against) than outside of NY (5.26, .309).
Hoskins, meanwhile, had a.966 OPS and hit 29 homers at Triple-A Lehigh Valley this season.
That news circulated on Thursday, which apparently frustrated an unnamed Mets official.
"He's still very aggressive", Mets manager Terry Collins said.
The Mets have won seven of their first 10 meetings with the Phillies this season and are 33-15 against them since the start of the 2015 season. Altherr (strained right hamstring) went on the DL on Saturday.
Opposing Pivetta will be Seth Lugo (5-3, 4.55 ERA). Lugo has allowed multiple home runs in three straight starts. Speaking of Pivetta, he gave up six runs, five earned, on seven hits while walking a pair and striking out four over 4.2 innings of work, not factoring in the decision.