You wouldn't have been the only one unfamiliar with the player who caught the night's first touchdown and vaulted into the stands for a Lambeau Leap on Sunday in Green Bay's thrilling win over the Kansas City Chiefs. It was the first career touchdown for undrafted rookie Ben Sims, a Texas native who's been on the 53-man roster all season.

"Growing up, you always wish to play in the NFL and you always wish to play in the mecca of pro football," Sims said after the game. "Today, I got to do that and I got to score my first touchdown and got to Lambeau Leap. So my heart is full."

Where did this guy come from?

Ben Sims spent the preseason with the rival Minnesota Vikings

Sims went undrafted out of Baylor but didn't sign with the Packers; he signed with the rival Minnesota Vikings. But when the Packers elected to trim their roster down to 53 players, the franchise brought Sims into the fold, claiming him off waivers.

The team's options at the position were thin, with 26-year-old Josiah Deguara as the elder statesman and draft picks Luke Musgrave and Tucker Kraft likely to get significant playing time. Both of those players have had success this year, but injuries to Deguara and Musgrave have opened the door for more Sims involvement.

Sims was one of multiple late-camp roster additions that could fill a tight end role, including first-year pro Austin Allen to the practice squad (since released) and H-back/fullback Henry Pearson, who was elevated from the practice squad for the win over Kansas City.

The Packers already liked Sims from his days at Baylor, where he was honorable mention all-conference in the Big 12 as a senior. He left school as Baylor's all-time record holder for career touchdowns by a tight end (12).

Why didn't the Packers draft Ben Sims then?

Sims (6-5, 258 pounds) isn't as developed physically as Musgrave or Kraft, but he did run the 40-yard dash in 4.58 seconds at his pro day, which would have ranked him third among all tight ends at the scouting combine, ahead of both Musgrave and Lions rookie standout Sam LaPorta.

Early in the season, Sims was seeing the field in two tight-end sets over Kraft, and Sims proved himself a formidable blocker.

He received a $10,000 signing bonus and $100,000 of guaranteed salary from the Vikings, which is a pretty high volume for an undrafted player, which means there was competition for his services. Minnesota wound up keeping four tight ends ahead of Sims.

“I think I’m in a really good spot,” Sims said after arriving in Green Bay. “We’re a really young room. We’re three rookies who can work off each other and help coach each other and we can learn and grow and develop together, which is kind of exciting. The other room I was in, there was some age and some veterans. They both have their perks, but I’m blessed to be in this situation.”

Sims told Bill Huber of Sports Illustrated that, when a Vikings official told him Green Bay had claimed him off waivers, Sims told Matt LaFleur he could hop into his truck and be there in four hours.

What had Ben Sims done before the Chiefs game?

The Texas native's touchdown against the Chiefs was his first career touchdown, bringing his total reception count for the year to three, with 15 yards total. All three of his receptions netted either a first down or score.

According to Football Reference, Sims has played 13% of the Packers' offensive snaps and 22% of the special-teams snaps.

This article originally appeared on Milwaukee Journal Sentinel: Who is Ben Sims? Packers TE caught first career touchdown vs. Chiefs