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![World champion sprinter Tyson takes a break during the Adidas running camp at the Athletes' Performance Institute in Carson, Calif., Wednesday, March 18, 2009. Gay suffered a knee injury during the offseason World champion sprinter Tyson takes a break during the Adidas running camp at the Athletes' Performance Institute in Carson, Calif., Wednesday, March 18, 2009. Gay suffered a knee injury during the offseason](https://c8.alamy.com/comp/2P8PG23/world-champion-sprinter-tyson-takes-a-break-during-the-adidas-running-camp-at-the-athletes-performance-institute-in-carson-calif-wednesday-march-18-2009-gay-suffered-a-knee-injury-during-the-offseason-that-cost-him-about-six-weeks-of-training-and-with-the-2009-season-about-to-begin-he-hasnt-yet-set-his-schedule-ap-photodamian-dovarganes-2P8PG23.jpg)
World champion sprinter Tyson takes a break during the Adidas running camp at the Athletes' Performance Institute in Carson, Calif., Wednesday, March 18, 2009. Gay suffered a knee injury during the offseason
![World champion sprinter Tyson Gay demonstrates his starting block techniques during the Adidas running camp at the Athletes' Performance Institute in Carson, Calif., Wednesday, March 18, 2009. Gay suffered a knee injury during the offseason that cost him ... World champion sprinter Tyson Gay demonstrates his starting block techniques during the Adidas running camp at the Athletes' Performance Institute in Carson, Calif., Wednesday, March 18, 2009. Gay suffered a knee injury during the offseason that cost him ...](https://l450v.alamy.com/450v/2p8pg0e/world-champion-sprinter-tyson-gay-demonstrates-his-starting-block-techniques-during-the-adidas-running-camp-at-the-athletes-performance-institute-in-carson-calif-wednesday-march-18-2009-gay-suffered-a-knee-injury-during-the-offseason-that-cost-him-about-six-weeks-of-training-and-with-the-2009-season-about-to-begin-he-hasnt-yet-set-his-schedule-ap-photodamian-dovarganes-2p8pg0e.jpg)
World champion sprinter Tyson Gay demonstrates his starting block techniques during the Adidas running camp at the Athletes' Performance Institute in Carson, Calif., Wednesday, March 18, 2009. Gay suffered a knee injury during the offseason that cost him ...
![adidas Running on X: "Course record & win for Sisay Lemma 🔥 A super strong run by Lemma turns up the heat in Valencia and sees him storm home by a big adidas Running on X: "Course record & win for Sisay Lemma 🔥 A super strong run by Lemma turns up the heat in Valencia and sees him storm home by a big](https://pbs.twimg.com/media/GAalfWcWwAAnXb7.jpg:large)