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6/22/2014 12:18 A.M. ET

J. Upton returns to action after dizziness lessens

WASHINGTON -- After learning the dizziness he has experienced this week has been caused by sinus pressure, Justin Upton returned to the Braves' lineup for Saturday night's game against the Nationals.

Upton provided an encouraging sign as he sprinted to first base on a ninth-inning groundout to complete his 0-for-4 performance in Saturday night's 3-0 loss to the Nationals. 

"I was moving around well and had some at-bats," Upton said. " At the end of the day, I felt good."

Upton missed his third consecutive start when he reported to Nationals Park on Friday afternoon feeling even worse than he had the previous few days. But after being examined by a doctor a few hours later, the Braves' left fielder was relieved to learn he was likely dealing with a nasal condition. His equilibrium has been affected by fluid in his ear.

"I've had a lot of head pressure, and probably some inner-ear stuff that was throwing me off a little bit," Upton said. "[The doctor] said it was kind of a day-to-day thing. He said these things can either linger or you can clean them up really fast."

After taking decongestants and allergy medicine, Upton felt some relief when he awoke on Saturday morning. He declared himself ready to play after taking some batting practice swings a few hours later.

Upton still believes that he might have been affected by the high altitude while playing four games in Denver last week. But now he believes allergies could have also influenced the way he has felt this week.

"Obviously, everybody has allergies and sinus stuff going on, but this is probably the worst I've ever had," Upton said. "I've come back from [Denver] feeling tired and dehydrated before, but not this bad."

Gattis extends hitting streak to 20 games with single

WASHINGTON -- Evan Gattis extended Major League Baseball's longest current hitting streak to 20 games with a sixth-inning single off Doug Fister in Saturday night's game against the Nationals.

According to the Elias Sports Bureau, Gattis' streak is the 16th in Atlanta history (since 1966) to consist of 20 games or more. The last Atlanta player to reach the mark was Dan Uggla on the way to recording a franchise-record 33-game hitting streak in 2011.

Gattis has batted .386 (32-for-83) with eight home runs and a 1.150 OPS during his hitting streak. Elias also noted Gattis stands as the first player since Jason Kendall in 2004 with the Pirates to produce a 20-game hitting streak while serving as the starting catcher during every game of the streak.

Floyd has MRI to determine extent of injury

WASHINGTON -- After returning to Atlanta on Friday afternoon, Gavin Floyd underwent an MRI exam that was to provide a clearer picture of the right elbow he fractured during Thursday night's win over the Nationals.

Braves manager Fredi Gonzalez said a doctor likely will not evaluate Floyd's MRI image until at least Monday.

An X-ray performed on Thursday showed Floyd broke the olecranon -- the pointed, prominent bone -- in his right elbow. While it is assumed the 31-year-old right-hander will be sidelined for the remainder of this season, it remains unknown when he might be able to pitch again.

Floyd underwent a May 2013 surgical procedure to repair a torn ulnar collateral ligament and flexor tendon in his right elbow. He underwent a year-long rehab process and then posted a 2.65 ERA in the nine starts he made for the Braves this season.

The Braves signed Floyd to a one-year deal that included a $4 million guarantee and incentives. It appears Floyd will end up making $4.75 million with this deal.

Mark Bowman is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.