Diamondbacks manager Torey Lovullo said Iannetta's top lip was split. "So, we're taking every precaution possible to make sure he is OK".
Iannetta fell to the ground immediately and eventually walked off the field with towel over his nose.
The Diamondbacks had only thrown two no-hitters in their franchise's history, with Randy Johnson's ideal game for Arizona in 2004, and Edwin Jackson throwing a no-hitter in 2010.
Barbato said the pitch was unintentional, and Lovullo seemed to agree.
Glasnow (1-3) lasted just 2 2/3 innings, giving up seven runs, seven hits and two walks with three strikeouts.
The Diamondbacks' 11-4 win on Friday night was eclipsed by a frightening moment in the seventh inning, when Pittsburgh reliever Johnny Barbato lobbed a 93 m.p.h. fastball that hit Chris Iannetta square in the face.
"His slider's been very good with late action in the hitting zone", Lovullo said. "I found my pitch and hit it".
Man sues to stop New Orleans from removing Confederate statue
The judge in that suit refused Monday to issue an immediate, temporary order blocking removal of the Beauregard statue. Officials say after they're removed, they'll be placed in storage and eventually relocated to a museum.
Iannetta hit a solo home run to start the third inning.
The Diamondbacks and Pirates have been beefing since 2014, when Pirates pitcher Ernesto Frieri hit Diamondbacks slugger Paul Goldschmidt in the hand, ending his season in August.
Twins 7, White Sox 6: Eduardo Escobar hit a three-run homer then added a fourth RBI with a double as visiting Minnesota beat Chicago. The next day, Pirates star Andrew McCutchen was drilled in the back with a fastball. The Giants, who have an MLB-worst 12-24 record, lost for the sixth time in seven games and for the 10th time in their last 12. A 93 miles per hour fastball would end up in Iannetta's face.
The Pirates are 53-25 in their last 78 Friday games, and 2-5 in their last seven road games versus a left-handed starter.
Drury also doubled and singled to improve his batting average at home to.448 (30 of 67), best in the majors.
Patrick Corbin (3-4) went six innings and gave up four runs, two on Josh Bell's homer.
Seattle used two singles and a wild pitch to put runners at second and third with one out in the seventh, but couldn't break the deadlock. Arizona was in total control by the time the hot-hitting Drury belted a towering shot into the left field seats for a 7-1 lead.
The Pirates made a pair of roster moves with the return of third baseman David Freese and utility player Adam Frazier from the disabled list.
- Josh Gordon reinstatement request denied by NFL
- Cahill eager to get Chelsea title party started
- 'Timeless' Saved From Cancellation as NBC Reverses Course With Season 2 Renewal
- US To Arm Kurds In Syria, Despite Turkish Opposition
- Teen's viral chicken nugget campaign surpasses Ellen Degeneres' for most retweets
- Why England star Ross Barkley should quit Everton this summer
- Apple's WWDC 2017 opening keynote to kick off 5 June
- Intel Report: Iran Refining Nuke Delivery System in Flagrant Violation of Ban
- Jakarta Governor Sentenced to Two Years in Prison for Blasphemy
- Fired-up Bouchard prevails over Sharapova in Madrid Open showdown