He won't be the only familiar face returning to Atlanta.
Acquired by Arizona in January's blockbuster Justin Upton trade, Prado and Delgado are both looking forward to this weekend's homecoming. A career .290 hitter, Prado is batting .241 with six homers and 26 RBIs in 75 games.
"It's going to be good," Prado, who spent his first seven big league seasons with the Braves, told MLB's official website. "There's a lot of people that I know that helped me along the way in my career. I know that it's going to be good to see them and show them my respect. It's emotional, but I think this is something different in my career, and I'm looking forward to playing against my ex-teammates and having a good series."
Delgado (0-1, 4.50 ERA), meanwhile, is scheduled to take the mound in Friday's opener.
"A little excited, because I'm going to the city where I pitched," he said. "But Martin and I, we want to just go there and play a normal game."
Delgado allowed four runs and six hits in five innings Sunday in a 4-2 loss to Cincinnati, dropping to 0-1 with a 3.75 ERA in two starts this year. He served up two homers in the first before settling down.
"I had two bad pitches, two mistakes, so after that I just tried to concentrate and keep the game close," Delgado said. "That's what I was trying to focus on. That's important for me to do. ... You can't think about the first inning after it; you have to keep going."
The Diamondbacks (42-36) had dropped a season-worst five straight on the road before beating Washington 3-2 in 11 innings Thursday. Aaron Hill, playing in his third game back since missing over two months with a broken left hand, hit a two-run homer and Didi Gregorius drove in the go-ahead run with a bunt single.
"That's one of the better games we've played in a while," manager Kirk Gibson said.
The Braves (45-34) are coming off their sixth loss in nine games, 4-3 in 10 innings at Kansas City on Wednesday. Upton singled home two runs but Atlanta went 2 for 9 with runners in scoring position.
The Braves will try to bounce back behind Julio Teheran (5-4, 3.32), who yielded two runs and eight hits in 6 1-3 innings last Friday in a 2-0 loss at Milwaukee.
"The first inning, he minimized the damage there," manager Fredi Gonzalez said. "He had bases loaded, there was the sac fly, and he was able to get the next couple guys out. There was another inning similar. That's good to see a young pitcher do that and not panic."
The 22-year-old right-hander, who's compiled a 2.45 ERA in his last nine starts, surrendered two runs in six innings May 14 in 2-0 loss at Arizona. The Braves dropped two of three in that series, but they've taken six of seven from the Diamondbacks at home by a 42-12 margin.
Upton, who went 5 for 10 with a homer, a double and four walks in those three games against his former club, is hitting .158 with one extra-base hit in his last 11 contests.