He re-signed with Speedo last year after a nine - year hiatus .
A diabetic , Hall has deals with Eli Lilly & Co . 's fast - acting insulin Humalog and BD Medical , maker of the syringe he uses .
Hall re-signed with Speedo last year after a nine - year hiatus .
A diabetic , Hall has deals with Eli Lilly & Co . 's fast - acting insulin Humalog and BD Medical , maker of the syringe he uses .