Vladimir Guerrero Jr. leaves game after collision

We’ve been advocating for O’Neill as an Opening Day leadoff hitter for years now... as long as he’s back batting fifth in game two. Although this is his first start as a leadoff man, O’Neill actually has been credited with two homers while batting first after coming off the bench this season. The start tonight is O’Neill’s eighth in a row following a couple of months in which he tended to start once or twice per week against lefties.

Robert has only ever played center field as a major leaguer, but the Mets believe A.J. Ewing is the better option there these days and have had Robert working out in left. Robert is out of the lineup today after starting in center the Mets’ previous three games.

The Rockies had Goodman catching when they made the lineup, but now he’ll miss a second straight start. Brett Sullivan is playing in his place.

The Rays have a tired bullpen after Friday’s game, so Boyle is up to help out if needed today. He hasn’t been pitching well of late — he has a 10.43 ERA in his last four starts for Durham — so this will probably be a very short stay.

Roycroft gave up six runs over 4 1/3 innings in his latest stint with the Rays. He has a 7.27 ERA in 17 1/3 innings for the season.

There were probably a bunch of teams putting claims in here, but the Angels had priority. Martin, 25, posted a 3.97 ERA in 11 1/3 innings for the Rays in the first half of the season. He doesn’t offer a particularly high ceiling in relief, but he could prove useful in the sixth and seventh innings with his mid-90s fastball, cutter and splitter and he still has all of his option years remaining.

Adames remains day-to-day with what the Giants are calling a mild lower back strain. Christian Koss is playing shortstop today.

Chapman said he originally tore muscle off the bone in two places back in April and played through it for months before going on the IL at the beginning of July. He hit .235/.324/.368 in 84 games before being shut down.

It’s a start. Judge, who last took the field May 31 against the A’s, has yet to resume swinging a bat, so it’s safe to rule out an August return here.

Gilbert has done fine work against righties, hitting .265/.357/.409 in 250 plate appearances, so he probably makes as much sense as anyone else on the Giants roster as the leadoff man against them. Jung Hoo Lee, who had been filling that spot recently, is batting cleanup today.