Last week, Pro Bowl tight end Jason Witten decided to step away from the game after 15 seasons that he spent with the Dallas Cowboys.

Witten had spent a large chunk of that time working with former Pro Bowl quarterback Tony Romo with the two developing a unique bond and connection on and off the field. With that in mind, Romo decided on Monday to tweet out a photo of his letter to the 35-year-old that called him the best player he played with in his career.

During their time together in Dallas, the two formed a dynamic duo in the passing game that the team relied upon over the years. Witten proved to Romo’s most reliable target making numerous big plays over the years that helped form the most stable part of the Cowboys’ offense.

Live and breathe the NFL?

🚨 Get viral NFL graphics, memes, rumors and trending news delivered right to your inbox with the Clutch Newsletter.

The heavy reliance on Witten helped further accentuate the type of unique talent that he had on the field that was not only one of the most productive players at his position while also being the all-around talent behind his exceptional blocker. This helped him finish among the best statistically in league story where he finished second all-time in career catches and receiving yards by tight ends, only trailing Tony Gonzalez.

Meanwhile, it also helped elevate the play of Romo that helped put together some highly productive campaigns that saw him earn four Pro Bowl selections and a Second-Team All-Pro nod. Although the Cowboys only had a handful of trips to the postseason during time together in Dallas, the team did experience much success the team with five trips to the playoffs including a pair of appearances in the NFC divisional round.

The two didn’t achieve the ultimate goal of winning a Super Bowl during their time together, it was a special pairing that was the key part of the foundation of the franchise for nearly a decade.