Possibly a concrete idealistic visual might help: Let's imagine a fictional school, the University of Boppawappaloo. The Big Boppers have been pursuing a "mechanical" style of recruiting four OLinemen per year. AND because their OLine coach is a distant relative of Harry Hiestand, they have smartly redshirted every frosh every year. Because of that practice, all the "graduating seniors" don't have to, and The Boppers have 5x4=20 potential OLine scholarship players. "Whoa! say screaming roster management fans. You guys are screwing up!! Fire Coach Homer Hiestand and maybe Bopper head coach, Smash Knuckleknocker!"
The coaches appear before the outraged internet fan board to try to explain. OK, guys, you're correct. THEORETICALLY we have 20 OLine scholarships, but look what really happened.
In 2011, we had 4, who would now be graduating;
In 2012, we had 4, who would be seniors;
In 2013, we had four, now juniors;
In 2014, we had four, now sophs; and
In 2015, we have four frosh coming in. "So you admit it, you incompetents!!".
Well, yes and no. If you remember, ol' Edsel Carbender of 2011 decided that his real love was Lacrosse, and left the team in 2013. Also, though we like the kid a lot, Freddie Shufflemuster has never played a serious down, and we won't be asking him back. So, the 2011 class 5th years are only Shed Rockclobber at RT, and Myron Mental at Center.
"That's STILL 18, you creeps!!"
Well, yes and no. Probably you are not aware that Axel Rhinelander of the 2012 class, who would have been a senior, has informed us that he's foregoing the 2015 season and is going pro. We are saddened at not having The Axe with us this season, but would never stand in the way of his career.
"Well.... that's still 17...."
Well, yes and no. Blasington Ballcracker also of 2012 has received a "no go" from the health staff, and will be completing his degree in Building Destruction Management under the University's medical scholarship policy.
"..... grumble....."
And we have been recently informed by Bullock deBullock of the 2014 class, that he plans to transfer due to concerns about the depth chart and playing time. We wish him all the best at Michigan.
"..... oh, shut up!......"
Thank you for your confidence in this staff and roster management.
Bottom line: Sh!t happens.