(Sports Network) - Right-hander James Parr tries for a second straight stellar start to begin his major-league career when the Atlanta Braves host the Colorado Rockies in the middle test of a three-game series tonight at Turner Field.

A fourth-round pick of the Braves in 2004, Parr reached the big leagues on September 4 against the Washington Nationals and was a winner right away, allowi just two hits in six scoreless innings of a 2-0 Atlanta win.

The 6-foot-1, 185-pounder walked three and struck out three in the victory.

Atlanta teammate Jo-Jo Reyes had a scheduled start pushed back to Sunday to replace rookie Charlie Morton and keep Parr on his regular turn in the rotation.

Veteran right-hander Livan Hernandez makes his sixth start of the season for the Rockies.

The Cuban export won 10 games in 23 starts with the Minnesota Twins before he was waived and later picked up by Colorado, making his Rockies debut in a 16-7 loss to San Diego on Aug. 10.

He defeated Washington in his second start with the team, but is since 0-2 in three starts while allowing 18 hits and 12 runs in 15 1/3 innings.

Hernandez has struggled mightily against the Braves in his career, winning just three of 18 decisions over 24 appearances - 23 starts - while posting a 5.44 earned run average in 147 1/3 innings.

He is 3-7 in 12 road starts in 2008.

On Tuesday, Kelly Johnson trotted home with the game-winning run when Colorado reliever Taylor Buchholz balked, and the Braves downed the Rockies, 5-4.

Casey Kotchman drove in two runs for the Braves, who halted a two-game skid. Jeff Francoeur and Brian McCann both added an RBI in the win.

Brad Hawpe belted a two-run homer for the Rockies, who have dropped three straight games. Garrett Atkins tied the contest in the ninth with a solo home run and Chris Iannetta also homered in the loss.

The Rockies sit seven games behind the NL West-leading Dodgers, who are currently playing the Padres.

After the Rockies tied the contest at 4-4 on Atkins' solo blast in the ninth, the costly miscue by Buchholz (6-6) lost it for them. He got the first two outs in the bottom of the 10th, but Johnson singled and raced around to third on a double by Josh Anderson.

Buchholz set up to face the next batter, Omar Infante, but prior to the first pitch thrown to Infante, Buchholz started his windup and stopped during it, therefore causing the obvious balk call by home plate umpire Wally Bell and Johnson walked home for the win.

Julian Tavarez (1-3) tossed a 1-2-3 top of the 10th to earn the win.

Colorado has won three of its five matchups with the Braves this season.