First, read John Ourand's Sports Business Journal piece on ESPN picking up their half of the Big Ten rights, what they've paid, what they'll show, along with CBS retaining their half. I don't want to regurgitate any of John's info, so here's a few add-ons.
* ESPNU is going to take the hit with respect to Big Ten content it appears. So who will benefit? Probably the American and Mountain West, who currently have a handful of games on ESPNEWS that will probably elevate themselves up to ESPNU. Here's the number of games from the Big Ten that aired on ESPNU and ESPNEWS in 2014 & 2015, along with the games on those networks after week four, when intraconference play tends to start. Note that with nine game intraconference schedules starting in 2016, the measuring stick will typically start with games after week three.
An indirect benefit should appear for the ACC too, who may end up with more games on the top three networks. Whether that affects a future ACC Network, I can't say, but if it were me, I'd just pay the extra rights fee to them and call it a day.
* Not much was mentioned with respect to men's basketball, so I am curious if ESPN retained any part of the men's basketball tournament since FOX retains the football championship game. There were some synergies to be gained from FOX getting a piece of the men's basketball tournament in 2018 with the tournament at Madison Square Garden along with FOX's existing Big East coverage.
My assumption for men's basketball is that CBS will cherry pick select men's basketball games on the weekends and that ESPN and FOX will figure out weeknights. It wouldn't surprise me to see FS1 try to spotlight Thursday nights since that was a night they usually aired an evening Pac-12 basketball game. Tuesdays could stay with ESPN with their Super Tuesday doubleheader with the SEC, Wednesday could be an exclusive BTN night with the Big East on FS1. Saturday and Sunday could be mixed up among all TV partners.
* I would expect FOX and ESPN to try to sort themselves out with respect to selection orders for the Big Ten, Big 12 and Pac-12. Those three will be tied together. Expect some gamesmenship. Some network will try to get both Ohio St.-Michigan & Notre Dame-USC at some point.
* Commentary: ESPN is still paying a pretty penny, but FOX looks like they got a lot of the perks. They'll be paying more, they'll have some priority in selection and they keep the football championship game. From the notes in SBJ (again, read it), either the Big Ten was bent on strengthening ties with FOX Sports outside of BTN or ESPN incorrectly read how much FOX was willing & able to pay to get a portion.