TitansOnline.com looks back at TE Delanie Walker's 2015 season. (AP Photos)
The players were initially selected as first alternates through the voting process.
With Panthers tight end Greg Olsen and defensive tackle Kawann Short headed to the Super Bowl, spots opened up for both Walker and Casey, and both accepted. Previously the two players turned down opportunities to play in the all-star contest.
Walker led the Titans and all NFL tight ends with a career-high 94 receptions in 2015. He had 1,088 receiving yards, with six touchdowns. Walker set franchise records for tight ends in catches and receiving yards in 2015.
Walker became just the ninth tight end in NFL history to record 90 catches in a season, joining Tony Gonzalez (five times), Jason Witten (four), Todd Christensen (two) and Dallas Clark, Jimmy Graham, Ben Coates, Martellus Bennett and Rob Gronkowski.
TitansOnline.com looks back at DT Jurrell Casey's 2015 season. (AP Photos)
"Playing this game, you want to be All-Pro, you want to get that Pro Bowl selection,'' Walker said of the Pro Bowl last month. "It would mean something to me. It would mean that my peers are noticing the work I put in on the field and see the hard work I put in out there, grinding week by week, and the fans noticing it as well. It means my play is being seen."
Casey started all 16 games at defensive tackle and tied for the team lead with seven sacks. Casey ranked second on the team with 11 tackles for loss, and a career-high 28 quarterback pressures, while also racking up 86 tackles.
Casey, who turned down a chance to go to the Pro Bowl in back-to-back years as an alternate, said during the season he'd go an alternate this year.
"You can't keep letting these things pass by like that," Casey said. "There are only a few chances you get these opportunities. I won't say I regret (not going before). But I am pretty upset I didn't get the last two, so I won't let the third one pass if I get an opportunity."