Peyton Manning is estimated to be worth $250 million and John Elway $145 million. But they might have to settle for second and third when it comes to the richest former Broncos quarterbacks.

Hunter Enis, 87, got into four games for the Broncos in 1962, completing 1 of 2 passes for 8 yards, before returning to the team as offensive backfield coach from 1967-71 under head coach Lou Saban. He later was wide receivers coach for the New York Giants from 1974-76.

Enis left football after that and became an oil and gas wildcatter in Fort Worth, Texas, eventually forming the Four Sevens Oil Company in 1990 with partner Dick Lowe. So how successful was that?

“We sold our production three times,’’ Enis said. “For all three times, it was well over a billion dollars. We didn’t have any debt, so we did pretty good.”

So, did Enis and Lowe both get around $500 million early this century?

“Well, close to it, yeah,’’ Enis said.

The modest Enis didn’t want to give any more estimates about his wealth, cracking, “I don’t miss any meals.” But he has become one of most notable benefactors of Texas Christian University in Fort Worth, where he was a star quarterback in the late 1950s.

Enis, who serves on TCU’s board of trustees, has played a key role in the refurbishing of Amon Carter Stadium. Four Sevens donated what was announced in 2012 as a $15 million donation to help rebuild Amon G. Carter Stadium. Enis said more actually was donated but didn’t give a figure. The football program’s team room is called the Four Sevens Meeting Room.

And to think Enis at one time was an obscure backup quarterback for the Broncos.

“Yeah, I remember him,’’ said former Denver star wide receiver Lionel Taylor, Enis’ teammate in 1962. “Real nice guy. From Texas.”

After his college playing career, Enis had joined the Dallas Texans of the first-year American Football League in 1960 and started two games, winning them both. He then spent 1961 as a backup for the San Diego Chargers before joining the Broncos in 1962.

In the opener, a 30-21 win over the Chargers, Enis relieved starter Frank Tripucka late in the game and threw his only two Broncos passes. Enis doesn’t remember much from that game but does recall what happened not long after that.

“I got cut,’’ he said. “I guess the coaches had bad judgment and couldn’t evaluate talent. I’m just kidding. Somebody was probably better than I was. That was part of the deal.”

Enis hooked on with the Oakland Raiders for the remainder of that season and started one game, a loss. But after 1962, his pro career was over.

In three AFL seasons, Enis completed 80 of 160 passes for 947 yards with four touchdowns and six interceptions. Two of his TD passes came against the Broncos, in 1960 for the Texans and in 1961 for the Chargers, so maybe that’s why they acquired him.

Enis returned to Denver in 1967 to coach the quarterbacks and running backs under Saban. Former Broncos running back Bobby Anderson had him as his position coach from 1970-71.

“He was a calm guy, very detailed and very smart,’’ Anderson said. “He would speak to you in a Texas drawl.”

Enis was the position coach in 1968 when Marlin Briscoe became the first Black starting quarterback in pro history. He started five games, completing 41.5% of his passes for 1,589 yards with 14 touchdowns and 13 interceptions.

“That wasn’t a big deal,’’ Enis said of Briscoe starting. “It was more of a big deal for the papers and everybody else. We had a lot of Black players, so it didn’t make a difference.”

The following season, Saban elected to bring Pete Liske in from the Canadian Football League to replace Briscoe. Briscoe asked for his release and eventually became a 1,000-yard receiver for the Buffalo Bills and a receiver who won Super Bowl rings with the Miami Dolphins in 1972 and 1973.

Saban went 20-42-3 with the Broncos and never had a winning season. He resigned with five games left in the 1971 season and was replaced by Jerry Smith on an interim basis. Enis then wasn’t retained in 1972 by new coach John Ralston.

“I loved Denver,’’ Enis said. “Before I left there in 1972, I went skiing 60 straight days.”

Enis eventually ended up as a Giants assistant for three seasons under Bill Arnspargar before the head coach and his staff were fired. Enis then figured it was time to try something different.

During his playing days, Enis had earned a master’s degree in geology at TCU. He sought to put it to use and eventually joined forces with Lowe.

“We were drilling the Barnett Shale, and we were at the front end of it,’’ Enis said of how he and Lowe made their fortune in finding natural gas. “What we did was lease in Fort Worth and surrounding areas, and so we got in on the front of it and did pretty well. We drilled a lot of wells and had a pipeline, and we sold out three times.”

So, what was the key to getting so much natural gas?

“We had kept drilling through the shale for a long time and nobody knew how to get the gas out,’’ he said. “But then they started what was called slickwater fracking and we started fracking and breaking up the rock. So, we could get the gas out and it made it very profitable.”

While Lowe died at the age of 92 in 2020, Enis still works regular hours at Four Sevens, although he no longer heads the company. Enis and Lowe both were inducted into the Fort Worth Business Hall of Fame and Enis is also a member of the TCU Athletics Hall of Fame.

Unlike Elway and Manning, Enis never made the Pro Football Hall of Fame. But in the words of Taylor, “I’d say he did OK.”

What I’m hearing

— For years, former Saints quarterback Archie Manning had at his New Orleans home all sorts of memorabilia from his career and from his two-star quarterback sons, Peyton and Eli. “My wife used to say, ‘Why do you keep this stuff around?’’’ Manning said. “I’d say, ‘Sports bar.’’’ While that was mostly a joke, Manning ended up getting an offer to partner with Harrah’s and open Manning’s Sports Bar and Grill in 2012 in New Orleans. “So, I cleared all the stuff out and put it in Manning’s Sports Bar,’’ he said. The bar includes all sorts of memorabilia from the careers of Manning and his quarterback sons, including stuff from when Peyton played for Denver from 2012-15.

–When the Broncos have a good game on the ground, their running backs rarely miss a chance to praise those on the offensive line. “They were great,’’ Jaleel McLaughlin said after Denver ran for 225 yards in Thursday’s 33-10 win at New Orleans. “I love to be behind them, and I want to keep working hard so that we can show them what appreciation (the running backs have).’’ Denver’s rushing total against the Saints was the most since they had 280 yards Nov. 24, 2013, at New England.

What I’m seeing

–Could the Broncos actually have found a tight end to provide some offense? Against the Saints, Lucas Krull caught three passes for 41 yards. After being inactive for the first four games, Krull has replaced Greg Dulcich as being active for the past three and has six catches for 57 yards. Meanwhile, Dulcich, Adam Trautman and Nate Adkins, Denver’s other tight ends, have combined this season for a meager 11 catches for 79 yards.

–The Broncos have had 12 different players get in on their 28 sacks. Every position group has had at least one player involved in a sack, from defensive lineman to inside linebacker to outside linebacker to cornerback to safety. “We want to see everybody get in (on it),’’ said defensive end Zach Allen. “We’ve got a really special group.”

What I’m thinking

–It’s interesting the Cleveland Browns have decided against renovating Huntington Bank Stadium, which opened in 1999, and plan to move into a domed stadium in suburban Brook Park. I wonder if the Broncos eventually will look to do likewise and leave Empower Field at Mile High, which opened in 2001, for a dome. The advantages of a domed stadium are being able to host events such as the Super Bowl, the Final Four and college football playoff games. The folks in Denver might want to keep up with the Joneses, and not just Jerry Jones, who long has had a domed stadium outside Dallas attracting big events.

–Next Sunday’s game at Empower Field will be a rematch of Super Bowl 50 between the Broncos and the Carolina Panthers. Fans of the two teams can lament how lean their seasons have been since then. The Broncos haven’t made the playoffs since winning that Super Bowl 24-10 in February 2016 in Santa Clara, Calif. The Panthers have made the playoffs just once since then, in 2017. In the eight years after that, both teams had losing records seven times. Denver is at least 4-3 this season while Carolina is 1-5 entering Sunday’s game at Washington.