Robertson "tried to put a fastball down and away" on last pitch Friday

Obviously that didn't work.

After giving up a walk-off two-run home run to Adam Dunn in yesterday's ninth inning, Yankees Closer David Robertson was clearly upset. 

Robertson, who grabbed his head in frustration the second the ball came off the bat, had been ahead of Dunn 0-2, already the second time that happened in the frame.

Usually in those situations, Robertson would emerge victorious, but there, according to him, he just missed his spot.

The first time that's happened this season. 

“I was trying to put a fastball down and away,” the first-year closer told Mark Feinsand of the New York Daily News after blowing his first save of 2014. “I left it up in the zone, it cut right to his barrel and he put it 40 rows deep.”

While that moment was obviously frustrating, Robertson is still 9-for-10 in save opportunities this season, so, while he did make a mistake, he still appears to be doing a pretty good job succeeding Mariano.

Remember, around this time last year Rivera had a game just like this at Citi Field, proving that yes, this happens to everybody. No need to panic over it, even though it was pretty rough to watch.