The late Brown won Boston in 1936 and 1939.
She also benefited from dropping down to the 100m as she's focused on the 400m in the past.
The AIU accepted her claim that her positive test came from a contaminated supplement.
Cheserek beat out Leonard Korir (28:33) and Biya Simbassa (28:39). *Results
The book has 160 signatures including Kip Keino, Moses Tanui, Eliud Kipchoge and Naftali Temu, the last Kenyan man to win the Olympic 10,000m.
Runners will receive their own home COVID test they need to use 24-hours before the race.
Sunday's race is the last covered by the contract that was signed in 2018, but the BBC are still the favorites to keep the rights.
*The Telegraph: BBC Urged By British Athletes And MPs To Not End 40-Year London Marathon Coverage
Joseph Lemeteki Razini took two seconds off the Japanese 10,000m collegiate record with 27:25.65.
He said he was using the race as a "lunching pad to achieve [his] set goals."
"My plan is not only to break the world record before I retire. Everybody is talking about sub-two hours, so why not? One day I will try this, I know it's hard work. I feel confident, so let's do it and see. ...I need some time to prepare, to be honest, I never take a long preparation for the marathon. Even two years ago, I prepared for three months. It's not enough, I have to train for longer. If everything goes well, I want to do better things in the future, so I am really confident in my capacity. I know my problems, like short preparation because of injury. I want to take more time and see."
Asked if he'd be singing in future albums Bolt said, “I’m happy to add some drops and appear in the music videos, but I don’t think my voice is that good for singing, so I don’t plan to pick up the microphone unless it’s absolutely necessary."
McColgan's time moved her to #3 on the UK all-time list.