Kejelcha, Cheserek and Brazier lead Boston´s middle-distance clashes
(IAAF News)

Organisers of the New Balance Indoor Grand Prix have announced that world indoor champion Yomif Kejelcha, multiple NCAA champion Edward Cheserek and a handful of the USA´s leading 800m runners are among the latest additions to the line-up for the IAAF World Indoor Tour meeting in Boston on 26 January.