[9] He was named the Dolphins starting kicker following the release of undrafted rookie Greg Joseph.
After his first season, Sanders was named to the Pro Football Writers of America 2018 all-rookie team.
[16][17] Sanders won the AFC Special Teams Player of the Week award for his performance.
[18] In Week 14, against the New York Jets, Sanders converted on a franchise-record seven of eight field goal attempts in the 22–21 loss.
[21] In Week 5, against the San Francisco 49ers, Sanders was a perfect 5 for 5 on field goal attempts and 4 for 4 on extra point attempts, scoring a total of 19 points, during the 43–17 win, earning AFC Special Teams Player of the Week honors for his performance.
Sanders was named the AFC Special Teams Player of the Month for his performance in November.
[28] On February 16, 2021, Sanders signed a five-year, $22 million contract extension with the Dolphins, making him one of the highest paid kickers in the NFL.
[35] In Week 16, against the Dallas Cowboys, Sanders went 5 for 5 on field goals, including a franchise record three 50+ yard field goals in a single game and a new career long of 57 yards, and converted the team's only extra point, securing a playoff spot for the Dolphins.