Who has the fastest lifetime avg for 10,000m track races?

For those who have run <28:20 5x or more, we have the following:

Name Nation Avg # performances

Kenenisa Bekele ETH 26:45.73 12

Zersenay Tadese ERI 27:11.40 10

Sileshi Sihine ETH 27:12.43 15

Micah Kogo KEN 27:18.08 7

Nicholas Kemboi KEN 27:19.50 6

Haile Gebrselassie ETH 27:20.39 27

Abdullah Ahmad HassanQAT 27:22.45 10

Gideon Ngatuny KEN 27:25.03 11

William Sigei KEN 27:26.06 5

Moses Masai KEN 27:26.32 10

Salah Hissou MAR 27:26.65 10

Richard Limo KEN 27:28.23 6

Boniface Kiprop UGA 27:28.44 15

Paul Tergat KEN 27:29.53 21

Abebe Dinkesa Negera ETH 27:30.08 9

Mohammed Mourhit BEL 27:30.15 5

Moses Mosop KEN 27:31.31 9

Mark Bett KEN 27:31.80 10

Luke Kipkosgei KEN 27:32.35 6

Sammy Kipketer KEN 27:32.68 9

.....

Dathan Ritzenhein USA 27:44.33 6

Galen Rupp USA 27:46.60 6

Mebrahtom Keflezighi USA 27:49.58 14

Abdihakem Abdirahman USA 27:52.18 22

Ritz is 45th on the list, Rupp 52, Meb 66, Abdi 81

Meb & Abdi have been much more prolific, however.