ESPN's Adam Schefter reports that Colts QB Andrew Luck has decided to retire. Luck has reportedly already talked to team management about his decision. Jacoby Brissett now takes over the starting gig. This appears to be a shocking move to everyone. Schefter reports that Luck feels "worn down." The QB switch lowers the ceiling for everyone in the Indy offense. The Colts finished 30th in points and 31st in scoring in 2017, with Luck sidelined (shoulder) and Brissett starting.

Here's a full breakdown of the fantasy impact of Luck's retirement.

Colts TEs Eric Ebron and Jack Doyle were on the field for the 1st day of training camp on Thursday. Both guys are coming off surgery -- groin for Ebron and hip for Doyle -- but are clearly on track for Week 1. We'll be watching this situation closely for clues on how snaps and targets will be divvied among Colts TEs. Doyle actually out-targeted Ebron 33 to 22 in their 6 games together last year.

Colts TE Jack Doyle got back to running routes at full speed this week, according to Zak Keefer of the Indianapolis Star. The TE hasn't yet been cleared for full practice, but the progress is good news for the hip he had repaired after the season. We'll check on Doyle's participation once training camp arrives.

Colts TE Jack Doyle might be ready to get back on the field later this month and is fully expected back by training camp, GM Chris Ballard said. Doyle was limited to just 6 games last season by hip and kidney injuries. He underwent what he called a “procedure" on the kidney and had surgery to fix the hip. He's been running and just recently began cutting again. “I feel good," he said. "Happy with the progress that I am making. Just slowly coming along, but it’s going in the right direction." Doyle saw 33 targets in his 6 games last year and ranked 8th among TEs in PPR points per game. He'll find more target competition with the offseason additions of Devin Funchess and rookie Parris Campbell, but Doyle could still bring spot-start value in 2019.

Colts GM Chris Ballard revealed at the Combine Wednesday that TE Jack Doyle recently underwent hip surgery. Doyle suffered a hip injury in Week 2 that cost him 5 games this past season. He's expected to be sidelined until training camp. "Jack's a vet player. I trust him; trust that he's going to do everything that he can to get back," Ballard said. "And we're shooting for the start of training camp for him to be back." We'll track Doyle's recovery this summer. He remained a big part of the Colts passing game when healthy last year, averaging 5.5 targets per game.

Colts TE Jack Doyle (hip) practiced all week, including a full workout on Friday. He's not listed on the final injury report and will play against the Raiders this weekend. Doyle is a risky fantasy play in his 1st action since Week 2, but he's worth considering in low-end TE1 territory. His return also dings TE Eric Ebron's fantasy value. Doyle out-targeted Ebron 15 to 9 over the first 2 games.

Colts HC Frank Reich said TE Jack Doyle (hip) will practice on Wednesday for the first time since going down in Week 2. Reich "didn't rule him out" for Sunday's game against the Raiders, according to insider Mike Wells. We'll monitor Doyle's progress over the next few days. His return would obviously be a buzzkill for TE Eric Ebron's fantasy value.

Colts TE Jack Doyle (hip) is out for this weekend’s game against the Bills. He’s yet to return to practice and still has no timetable for return. Eric Ebron remains locked in as a TE1 with Doyle out.

Colts TE Jack Doyle (hip) remained sidelined for Wednesday's practice. Don't bank on him returning this weekend. Eric Ebron ranks 2nd among TEs in PPR points and 1st in non-PPR over the past 4 weeks.

Colts TE Jack Doyle (hip) has been ruled out for Sunday's game against the Jets. He was unable to practice this week and still has no timetable for return.

Colts HC Frank Reich labeled WR T.Y. Hilton (hamstring) and TE Jack Doyle (hip) "week-to-week." That doesn't sound promising for their chances of playing against the Jets on Sunday. Hilton's absence would again leave Chester Rogers and Ryan Grant as Indy's top 2 WRs -- and low-end fantasy options in PPR leagues. And Doyle's absence would mean another big workload for TE Eric Ebron.

Colts TE Jack Doyle (hip) has been ruled out for Thursday night's game against the Patriots. He didn't practice all week and has no timetable for return. Eric Ebron will again serve as Indy's lead TE on Thursday and is a solid fantasy starter. He's posted back-to-back 5-catch outings on 21 total targets.

Colts TE Jack Doyle (hip) remained sidelined on Tuesday. He's not going to play against the Patriots on Thursday night. That'll again make Eric Ebron a viable TE1. He's seen 21 targets over the past 2 weeks.

Colts TE Jack Doyle (hip) is out for Sunday's game against the Texans. There's no timetable for his return. With Doyle sidelined last weekend, TE Eric Ebron played 88% of the snaps and saw 11 targets. That usage makes him a TE1 play for Week 4.

Colts TE Eric Ebron (shoulder, knee) returned to a full practice on Thursday. It looks like his absence on Wednesday was just a day off. With TE Jack Doyle looking unlikely to suit up against the Texans this weekend, Ebron will be a top-10 play.

Colts TE Jack Doyle (hip) remained sidelined on Wednesday. HC Frank Reich labeled him "week-to-week" last week, so fantasy owners shouldn't be counting on Doyle to play against the Texans on Sunday.

Colts TE Jack Doyle (hip) is out for Sunday's game against the Eagles. We don't have any details on his injury, but he didn't practice all week. Consider him questionable at best for Week 4. Doyle's absence this weekend should mean a big boost in snaps and targets for TE Eric Ebron. He's a nice Week 3 fantasy play.

UPDATE: HC Frank Reich labeled Doyle "week-to-week" on Friday.

Colts TE Jack Doyle (hip) missed his 2nd straight practice on Thursday. We don't have any more information, but it's certainly fair to wonder about his availability for this weekend's game against the Eagles. We'll get another update on his status tomorrow. Doyle's absence would turn Eric Ebron into a locked-in TE1.

Colts TE Jack Doyle (hip) didn't practice on Wednesday. It's the 1st we've heard of the issue, and this might just be a veteran's day off. Check back tomorrow for another update on Doyle.

The Broncos have ruled S Justin Simmons out for Thursday night's game against the Colts because of an ankle injury he suffered while celebrating during Sunday's win over the Jets. The Denver Post reports that Simmons is also likely to land on IR. That's not a huge loss for IDP owners or the defense but could further hamper the Broncos' TE coverage, an area that has been a defensive weakness anyway. Simmons' status is good news for Colts TE Jack Doyle this week.