49ers
49ers · Player

Jack Jones

Position
CB
Number
#25
Age
28
Pieces here
17

On the record

Called Shots →
Held upAug 15, 2026

None of the three defensive backs San Francisco worked out on August 14, 2026, Bryce Hall, Troy Pride Jr. and Corey Mayfield Jr., signs with the 49ers on or before August 20, 2026. The take is CORRECT if the club's transaction log carries no signing of any of the three by the end of August 20. It is WRONG if any one of them is signed in that window, whatever the corresponding move is.

Held upAug 21, 2026

In San Francisco's Week 1 game against the Rams on September 10, 2026, Jack Jones plays MORE defensive snaps than Nate Hobbs. A player absent from the game book's Playtime Percentage page counts as zero, whether he is inactive, on injured reserve, or no longer on the roster. The take is CORRECT only if Jones's defensive snap count is strictly greater than Hobbs's. It is WRONG if Hobbs's is equal to or greater than Jones's, and that includes the case where both are zero.

Written about him

Camp Notebook

Nick Bosa Practised For The First Time Since August 3

Nick Bosa practised Wednesday for the first time since August 3, in individual drills and in team periods, per Nick Wagoner at ESPN. It is his first full practice since he tore the right anterior cruciate ligament in Week 3 of last season. He said afterwards that once a session reaches team work there is no governor on it, and that he is confident about Week 1. Ian Rapoport reported Wednesday morning that Bosa and George Kittle both travel to Australia. Kittle has now had three straight days of team work, dated to Monday by John Lynch. Six players sat out, three fewer than Tuesday: Renardo Green, Jacob Cowing, Luke Gifford, Gracen Halton, Romello Height and James Thompson Jr. Jack Jones was on neither list and did no work with the team. Left guard is still not named. The club hosted defensive tackle McKinnley Jackson on a visit and signed nobody.

Sam KezarSep 2, 20264 min read
Nick Bosa Practised For The First Time Since August 3
Preseason Analysis

Carver Willis Graded Last Among The 49ers Linemen A Week After Grading First On The Team

PFF's grades from the 49ers' 41-17 preseason win at the Chargers, read one player at a time. Carver Willis graded last among the eleven San Francisco offensive linemen charted, a week after grading first on the whole team against Tennessee. Nick Zakelj, re-signed six days ago and absent from the head coach's list of left guard competitors, graded second among every lineman in the game. Two undrafted rookie defensive tackles posted the best defensive grades on the roster, Sincere McCormick ran for the most yards on the field and graded as the team's worst pass blocker, and Jack Jones took the best coverage grade while Darrell Luter played the most snaps and took the lowest among the corners who finished.

Sam KezarAug 22, 20266 min read
Carver Willis Graded Last Among The 49ers Linemen A Week After Grading First On The Team
Camp Battles

Jack Jones Broke Up Two Passes At The Chargers. Nate Hobbs Has Not Played A Preseason Snap.

The official game book from Thursday night at SoFi Stadium credits Jack Jones with two passes defensed, the most by any 49er in a game the team finished with seven, and 29 of San Francisco's 59 defensive snaps. Nate Hobbs pulled a groin at the joint practice with Tennessee on August 11 and does not appear on the participation page of either preseason game. Kyle Shanahan said on August 13 that Hobbs would be out a few weeks. The roster is due Sunday, August 30 at 3:00pm PT. This board moves Jones from 5 to 7 and inside the projected 53, and Hobbs from 6 to 5 and outside it.

Sam KezarAug 21, 20266 min read
Jack Jones Broke Up Two Passes At The Chargers. Nate Hobbs Has Not Played A Preseason Snap.
Camp Notebook

Jack Jones And Marques Sigle Were In Uniform Saturday. The 49ers Signed Nobody.

Jack Jones, No. 25, and Marques Sigle, No. 36, were in uniform for Saturday's 11:50 a.m. practice, two days after leaving the preseason opener with a hand and an oblique. Jacob Cowing, No. 6, was too. Christian McCaffrey (tightness), Nick Bosa (soreness and tendinitis in the surgically repaired knee) and Kurtis Rourke (ribs) did not practise. No transaction has been announced since August 12 on the club's own log and August 13 on ESPN's, and the roster sits at 90 chargeable players against a limit of 90, counted table by table on Saturday afternoon. Thursday's running backs carried 23 times for 52 yards. Nothing on the 53-man projection crossed the cut line.

Sam KezarAug 15, 20263 min read
Jack Jones And Marques Sigle Were In Uniform Saturday. The 49ers Signed Nobody.
Camp Notebook

Bryce Hall And Corey Mayfield Jr. Won A UFL Title Together. On Friday They Were Auditioning In Santa Clara.

The 49ers worked out three defensive backs on Friday, per David Bonilla off the NFL's daily transaction report, with Nate Hobbs out a few weeks, Jack Jones nursing a hand and Marques Sigle an oblique. Bryce Hall and Corey Mayfield Jr. were teammates on the UFL champion Louisville Kings, and Troy Pride Jr. was a fourth-round pick in the same 2020 draft that took Hall in the fifth. No signing had been announced by mid-afternoon, and the roster has been full for ten days. Kurtis Rourke was released from the hospital Thursday night and no result of his further imaging has been published. The first snap counts of the preseason put Robert Jones and Connor Colby on opposite sides of the centre for all 44 first-unit snaps, and Jordan Watkins on the field for 58 while Jacob Cowing took none.

Sam KezarAug 14, 20263 min read
Bryce Hall And Corey Mayfield Jr. Won A UFL Title Together. On Friday They Were Auditioning In Santa Clara.

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