Forget the anomaly that was Friday's low-scoring game.

In May, the Arizona Diamondbacks averaged 2.9 runs per game, fewest in the major leagues. So far in June, however, they are averaging 6.5 runs, including 37 in five games against the Pittsburgh Pirates.

The Diamondbacks (42-33) and Pirates (36-39) play the third game of a four-game series Saturday at PNC Park in Pittsburgh after Arizona's 2-1, 13-inning win Friday.

The Diamondbacks this month have 178 hits, nine triples, 81 walks and 32 homers.

A couple of players -- leadoff batter Jon Jay and Paul Goldschmidt -- seem to have sparked Arizona's offense.

Jay has multiple hits in seven of his 14 games since he was acquired by trade June 6 from Kansas City. He has reached base in all but one game and reached base twice in eight games. He has scored 16 runs with eight RBIs.

"He's come in and he's been unbelievable for us at the top of the lineup," Diamondbacks general manager Mike Hazen told the Arizona Republic. "Almost every day he's getting on base a couple of times and he's just sparking us in so many different ways. He's giving us professional at-bats. That's something that we weren't putting together consistently during that rut in May, which we've come around to doing now. It's all sort of adding back up together again."

Don't look for Jay to cough up any secrets.

"I'm just trying to go out there and be myself," he told MLB.com. "I just try to keep it simple. We've got a great core group of guys here. I'm just trying to be a complement to the group we have already."

Goldschmidt is batting .475 with six doubles, a triple, eight home runs and 20 RBIs in his past 16 games.

The Diamondbacks got caught in a pitchers' duel Friday but won their second straight game and third in their past four. They have won six of seven on the road.

Pittsburgh has lost three straight and four of five.

On Saturday, Pittsburgh right-hander Joe Musgrove (2-2, 3.68 ERA) is scheduled to face Diamondbacks righty Zack Greinke (6-5, 3.90).

Musgrove will be making is sixth start since beginning the season on the disabled list. He was dynamic out of the gate but was flat in his most recent outing, an 8-6 loss Sunday against Cincinnati when he gave up six runs and eight hits in 4 1/3 innings, with six strikeouts and one walk.

"I felt OK. That's my first day game in a while. Just trying to get my body alert," Musgrove said. "It was hot out there. I felt drained. But that's something I'm aware of now, and that's something I'll try to prepare for."

Saturday's game also is a day game, although with a late-afternoon start.

"I don't feel like I'm lost right now. I still feel really good," Musgrove said."

Musgrove is 0-0 with a 2.45 ERA in two career appearances, including one start, against Arizona. That start was June 11 when the first five of his six-plus innings were scoreless in what became a no-decision. He ended up allowing three runs (two earned) on five hits in six innings.

Greinke has won three of his past four starts. He is 7-4 with a 4.91 ERA in 12 career starts against Pittsburgh. In his one start against the Pirates this season, Greinke gave up five runs on five hits and four walks over 4 2/3 innings. He took the loss in that June 13 game, which ended with a 5-4 Pirates victory.