Bill Cahill, the former University of Washington football captain and Buffalo Bills defensive back remembered for his hard-hitting style, has died at the age of 75.
Cahill’s death was reported Thursday, with former Washington quarterback Sonny Sixkiller among those who shared news of his passing. According to reporting from Sports Illustrated’s Washington Huskies coverage, Cahill died following an extended illness. A specific medical cause of death has not been publicly disclosed in the reports reviewed.
His passing marks the loss of a notable figure from one of the most memorable periods in Washington football history.
Who Was Bill Cahill?
William Blackburn Cahill was born May 5, 1951, in Bellevue, Washington. He attended Bellevue High School before continuing his football career at the University of Washington, where he developed into a standout defensive back.
Cahill played for the Huskies from 1970 through 1972 and became known for his aggressive approach at free safety. He was listed at 5 feet 11 inches and 180 pounds, but his physical style made him one of the more recognizable defensive players on those Washington teams.
His senior season in 1972 was particularly significant. Cahill served as one of the team’s co-captains alongside Sonny Sixkiller, helping lead a Washington squad that finished 8-3.
Washington Huskies Career
Cahill was a three-year starter for Washington during the early 1970s.
During his college career, he recorded nine interceptions and returned one of those interceptions for a touchdown against Washington State. He was also an effective punt returner, including a 70-yard touchdown return against Illinois. His performances earned him honorable-mention All-American recognition from United Press International.
His aggressive defensive style became part of the identity of the Huskies during the Sonny Sixkiller era.
One of the most frequently remembered moments from Cahill’s playing career came during a Washington-USC game, when he delivered a major collision against Trojans running back Lou Harris.
Cahill later recalled the collision as an example of the hard-hitting mentality that characterized his Washington teams.
1972 Team Captain Alongside Sonny Sixkiller
Cahill and Sixkiller were co-captains of the 1972 Washington Huskies.
Their relationship extended beyond the football field, with Sixkiller later remembering Cahill as a close teammate and friend. One story from that season involved the two players persuading Washington’s coaching staff to allow the team to wear white football shoes.
The episode reflected the personalities of a team that helped restore Washington football after a difficult 1969 season.
Washington went 6-4 in 1970, 8-3 in 1971 and 8-3 again in 1972 during Cahill’s three seasons as a starter.
NFL Career With the Buffalo Bills
Cahill entered the NFL after being selected by the New Orleans Saints in the seventh round of the 1973 NFL Draft with the 158th overall selection.
Although drafted by New Orleans, he ultimately played his professional career with the Buffalo Bills.
Cahill spent two seasons with Buffalo in 1973 and 1974, appearing in 19 regular-season games. He played primarily on defense and special teams and became a notable kick and punt returner.
His NFL statistics included 14 punt returns for 135 yards and one touchdown, along with three kickoff returns for 68 yards.
One memorable moment came during the 1973 season when Buffalo running back O.J. Simpson was pursuing the NFL’s then-record 2,003-yard rushing season. Cahill also made an impact in that game against the New York Jets by returning a punt 51 yards for a touchdown.
Bill Cahill Career Facts
| Category | Details |
|---|---|
| Full name | William Blackburn Cahill |
| Born | May 5, 1951 |
| Birthplace | Bellevue, Washington |
| Died | September 2026 |
| Age | 75 |
| Position | Defensive back / free safety |
| College | University of Washington |
| High school | Bellevue High School |
| UW career | 1970-1972 |
| UW leadership | 1972 co-captain |
| NFL draft | 1973, Round 7, Pick 158 |
| NFL team | Buffalo Bills |
| NFL seasons | 1973-1974 |
| NFL games | 19 |
| Punt return yards | 135 |
| Punt return touchdowns | 1 |
Career information is supported by Pro Football Reference and Washington football records.
Life After Football
After his playing career ended, Cahill remained connected to the Seattle-area community.
He later worked in production management for Boeing in the region. Although his professional football career lasted only two seasons, his legacy remained closely tied to the Washington Huskies and the early-1970s teams that helped revive the program.
His name continued to appear in Washington football memories, particularly through his connection with Sixkiller and the defensive identity of those teams.
Bill Cahill Cause of Death
According to the current report from Sports Illustrated’s Washington Huskies coverage, Cahill died after an extended illness at age 75.
No specific disease or medical condition was identified in that report.
As a result, claims identifying a particular illness as the cause of death should be treated as unverified unless the family or another authoritative source releases additional information.
Washington Football Community Remembers Cahill
News of Cahill’s death was shared by Sonny Sixkiller, who reached out to people familiar with their Washington football years.
Cahill’s legacy extends beyond his statistics. He was part of a group of players who helped transform the Huskies from the difficult 1969 season into competitive teams during the following three years.
His combination of defensive leadership, special-teams contributions and physical style made him an important part of the Sixkiller-era Washington program.
A Lasting Huskies Legacy
Bill Cahill’s football career may have been relatively short by professional standards, but his impact at Washington remained significant decades after he left the field.
As a three-year starter and 1972 co-captain, he belonged to a generation that helped establish a new identity for Washington football.
His death at 75 brings an end to the life of a player remembered by teammates and Husky supporters for his toughness, leadership and willingness to play an aggressive brand of football.
Disclaimer
This obituary is based on current reporting available in September 2026. Bill Cahill’s death has been reported at age 75 following an extended illness. A specific medical cause of death has not been publicly confirmed in the sources reviewed, and no unverified cause should be treated as fact. Additional information may be released by his family, former teammates or the University of Washington.