Karlos Williams is overweight and Rex Ryan is not happy

• Karlos Williams rushed for 517 yards and scored seven TDs as a 2015 rookie.
• The fifth-round draft pick has missed most of the offseason program due to the birth of his son.

ORCHARD PARK — For as long as women have been having babies, we have heard how pregnancy can sometimes drive irregular eating habits, and Karlos Williams’ fiancée is no exception.

The thing is, her cravings the past few months before she gave birth to a son a few weeks ago apparently impacted Williams, the second-year running back of the Buffalo Bills, and as the team’s mandatory mini-camp got underway Tuesday, Williams was not participating because he’s simply not in good enough shape.

“I like to eat and then her being pregnant gave me an excuse to eat, so eating anything and everything,” Williams said. “She’d wake up, one or two o’clock, ‘I want a snack.’ Well I’m not going to sit here and watch you eat because I don’t want you to feel bad.’”

Williams was joking about it, and he seems perfectly confident that between now and the start of training camp July 30 at St. John Fisher College he’ll get the extra weight off and be ready to roll. His coach, Rex Ryan, who has battled weight problems to the extent that he underwent lap band surgery, wasn’t joking about Williams’ condition, though.

“Obviously he's not anywhere close to where he needs to play at a high level,” Ryan said. “So we've got to get some weight off him and he certainly understands that. You guys can see him as well as I do; he's clearly overweight. You wish that he was in much better shape, there’s no question about it. I think in the future I’m sure he’s got to realize that what he did this offseason is far from what you want. He’s a young guy, hopefully he’ll learn from it.”

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Last year, the fifth-round pick from Florida State rushed for 517 yards and scored seven touchdowns, and he tied an NFL rookie record by scoring in each of his first six games. However, he was also hampered by injuries and missed five full games and parts of two others. He was listed on the roster sheet at 230 pounds, but he was probably about 240 most of the season, and he’s clearly well above that right now, though he wouldn’t say what he weighs.

“Not far off, not far off,” Williams said. “It’s going to require some work, some discipline in the meal room and that’s something I have to do, I’m a professional. The coaches and the strength and conditioning coaches are behind me, so it’s not going to be a problem.”

Again, speaking from experience, Ryan cautioned that dropping the weight could be tricky.

“I don’t think it’s going to be easy, I don’t think that at all,” Ryan said. “Obviously he’s had some different things, I know some personal things and all that, but we do have to be slow with him, that’s why I wasn’t putting him out here full-speed. What you don’t want to do, you don’t want to have him, all of a sudden he’s going to drop 20 pounds and he comes out here and he gets hurt the first day of training camp; that’s what we’re trying to avoid.”

Kelly questions Ryan’s job security: Last week when Jim Kelly went on the Jim Rome radio show, he said that he believes Ryan’s job could be on the line if the Bills don’t make the playoffs this season, even though it’s only Ryan’s second year in Buffalo.

“I think Rex will probably be looking for another job,” Kelly said. “I think everybody knows that, including Rex.”

Well, that was news to Ryan because he doesn’t think his job security should be in doubt.

“You know what, I think if you ask Jim, I think Jim knows I'm a hell of a coach and a good coach for this team and this community,” said Ryan. “I think he'd tell you that, I hope he would. I'm going to call him first. But I truly believe he would say that. But, again, one guy's opinion about something. I just think that it's amazing that everything's focused on that. I can tell you this, my focus is definitely not on my job security or anything else. Mine is on winning, man. I mean, I expect to win. I expect to win big time. You know, we're all here, we're putting this team together because we want to win a championship. Whenever that is, I don't know, but I can tell you this - that's what drives me, that's what drives this organization. I expect some great things out of this team, and I'm going to be shocked if it doesn't happen.”

McCoy has ankle problem: Ryan admitted a faux pas Tuesday. He’s been telling the media recently that running back LeSean McCoy has been slowed this off-season by a lingering hamstring problem, but it’s actually an ankle injury.

“I've been telling you guys the wrong things about Shady," Ryan said. “It's actually an ankle, not a hamstring, so that tells you how much I knew. I should've said leg injury like the hockey version and we would've been fine.”

It’s not even training camp, so there doesn’t seem to be much to worry about. McCoy has sat out most of the full team work and he did not partake in the 7-on-7 drills Tuesday, either. However, if it was the regular season, McCoy would be able to play. Same goes for left tackle Cordy Glenn who sat out Tuesday’s practice with an undisclosed injury.

“He's got something, I don't know,” Ryan said. “He's been in the training room. He's here early in the morning and everything else, training. If we were playing a game on Sunday he'd be out there.”

MAIORANA@Gannett.com