![Lars Grahn on Twitter: "Yasser Seirawan played tennis with Robert Byrne in Merano 1981 between world championship games. Yasser was Kortchnoi's second. I was ballboy and reporter. Photo: Lars Grahn #STLRapidBlitz @GrandChessTour Lars Grahn on Twitter: "Yasser Seirawan played tennis with Robert Byrne in Merano 1981 between world championship games. Yasser was Kortchnoi's second. I was ballboy and reporter. Photo: Lars Grahn #STLRapidBlitz @GrandChessTour](https://pbs.twimg.com/media/EB3rOA_WwAEO6iK.jpg)
Lars Grahn on Twitter: "Yasser Seirawan played tennis with Robert Byrne in Merano 1981 between world championship games. Yasser was Kortchnoi's second. I was ballboy and reporter. Photo: Lars Grahn #STLRapidBlitz @GrandChessTour
Chess.com on Twitter: "Join us in wishing a very happy birthday to Yasser Seirawan! 🎉🥳 A four-time U.S. chess champion, Yasser defeated both Karpov and Kasparov, and is renowned for his legendary
![Winning Chess Endings (Winning Chess - Everyman Chess): Seirawan, Yasser: 9781857443486: Amazon.com: Books Winning Chess Endings (Winning Chess - Everyman Chess): Seirawan, Yasser: 9781857443486: Amazon.com: Books](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/614XikIw-LL._AC_UF1000,1000_QL80_.jpg)
Winning Chess Endings (Winning Chess - Everyman Chess): Seirawan, Yasser: 9781857443486: Amazon.com: Books
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Winning Chess Openings (Winning Chess - Everyman Chess): Seirawan, Yasser: 9781857443493: Amazon.com: Books
![Kingwalks: Paths of Glory: Seirawan, Yasser, Harper, Bruce, Hans Ree: 9781949859386: Amazon.com: Books Kingwalks: Paths of Glory: Seirawan, Yasser, Harper, Bruce, Hans Ree: 9781949859386: Amazon.com: Books](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61TDm6epSiS._AC_UF1000,1000_QL80_.jpg)