49ers sign a cornerback who started in every game last year
The 49ers are adding to their cornerback room
MIAMI GARDENS, FLORIDA - DECEMBER 21: Jack Jones #23 of the Miami Dolphins is introduced prior to a game against the Cincinnati Bengals at Hard Rock Stadium on December 21, 2025 in Miami Gardens, Florida. (Photo by Megan Briggs/Getty Images) | Getty Images The San Francisco 49ers hosted former Miami Dolphins cornerback Jack Jones on Friday. ESPN’s Adam Schefter reported he signed a one-year deal with the Niners.
Jones started all 17 games for the Dolphins last season and played over 91 percent of the snaps. Jones also played nearly 1,000 snaps the year before with the Las Vegas Raiders, where he started 16 games. Jones, a fourth-round pick out of Arizona State in 2022, was targeted 40 times last season.
He allowed 23 completions for an average of 7. 9 yards per target and six touchdowns. Jones also allowed eight touchdowns on 67 targets in 2024.
However, he’s found a way to be competitive, as evidenced by his 18 combined pass breakups and four interceptions(two of them drops) in the previous two seasons Jones was relatively undersized coming into the NFL, AT 5’10 3/4 and 171 pounds. Some of that size can be mitigated by playing to the wide side of the field. The Dolphins used Jones as the “field” cornerback on 82.