That's what I've heard as well. Of course that doesn't mean it's true. No pitcher's going to come out and say that they're losing velocity because they're fatigued from pitching 450+ innings in two years or because they may have elbow or shoulder issues.
Just playing devil's advocate here, I'd certainly welcome Ubaldo to the team.
He refused to admit that Salty was effective last week. It's not like it's something he said in April, so I don't know how pointing it out is a "cheep shot". Besides, multiple posters are joking about it.
Fangraphs. Here's the page for Freddy Garcia which shows he has a 25.7% linedrive rate, a .295 BABIP and an xFIP of 4.12 which baseball means his ERA would be above 4 if you normalized his home run rates to 10.5% of his fly balls which is actually below his career average.
http://www.fangraphs.com/statss.aspx?playerid=1077&position=P
Colon's peripherals are actually pretty solid but Garcia's suggest he's been one of the luckiest pitchers in baseball this year.
The Yankees rotation is a lot like ours. They have 2 top of the rotation starters and a lot of filler. Garcia is getting good results right now but all of his peripherals suggest he's been extremely lucky. He has a major league worst 25.7% line drive rate and a BABIP below .300. Not to mention his HR/FB rate is about half his career average which doesn't mesh with the fact that he's pitching in the new Yankee Stadium. But they don't have an offense that goes out and scores 10 runs when their starter gives up 7.
The fact that Freddy Garcia's overachieving (his BABIP is .075 points lower than it should be based on his line drive rate), Hughes doesn't look like he's improved at all and the Yankees most valuable player prior to the All-Star break is out for the majority of the second half doesn't make them a very scary team right now. What they look like in October may be a different story.