On 19 June 2009, Al-Raed signed with Ahmed Al-Kassar from Al-Taraji for 1.8 million Saudi Riyals.[2] He left in 2015 to go to Al-Ettifaq.
Al-Ettifaq
On 10 September 2015, Al-Ettifaq signed with Ahmed from Al-Raed.[3] He won the Saudi First Division in his first season. On 18 August 2017, Ahmed Al-Kassar made a last-minute assist for Hazaa Al-Hazaa to help Al-Ettifaq draw 2–2 against Al-Nassr.[4] He became only the fifth goalkeeper to make an assist in the Saudi Professional League.[5] After the match, he said that manager Miodrag Ješić did not want him to go forward, but he ignored that and made the assist.[6]
Al-Fayha
On 20 June 2023, Al-Kassar joined Al-Fayha on a free transfer.[7]
Al-Qadsiah
On 30 January 2024, Al-Kassar joined Al-Qadsiah on a three-and-a-half-year deal.[8]
