Not to hijack a thread about the Delta-13 rack products (as folks know I love mine), but when it comes to 14.1, I've actually warmed to another rack product that:
1. Subscribes to the notion of "make the rack fit the balls," not "make the balls fit the rack." In other words, a rack product that even works with undersized balls.
2. Allows for complete access to the back of the rack, for behind-the-rack breakshots in 14.1 where the break ball is very close to the back row of balls.
This is the TrueRack, offered by "elvicash" here on AZB (not my pics, btw -- they are from the TrueRack website gallery):
Notice how the back of the rack is completely open, allowing for very close break balls in 14.1. And yes, I've tested this, and you can have a break ball as close as half a ball away from the back row, and it's still a good break ball (as long as the cue ball "fits in there" between that break ball and the back row to cut the break ball into the corner pocket). Obviously, break balls this close are not optimum, because it's hard to predict the precise path the cue ball will take, and whether or not you'll get stuck in that back row. But at least it's possible.
It does take a bit of getting used to using the TrueRack, in that it's a hinged product, and you use your hands -- all your fingers on the sides of the rack and your thumbs and palms on the back row of balls -- to squeeze the rack down upon the balls. It's definitely NOT as easy to use as the Delta-13 products. But it's a good product that's EXTREMELY well-made, folds up and fits into your case's long pocket (pictured above), and works great for this specific point-purpose.
Yeah yeah, I know, I'm a rack junkie. But when you play 14.1, a good rack product that doesn't interfere with the balls or the position of break balls is key.
-Sean