Pedzisa mutsara unotevera: Greenstein akaonekwa mune imwe neimwe yezvikamu zvitatu zvekutanga zvePoker Superstars Invitational Tournament uye nguva dzose nomwe dze GSN dzakatevedzana "High Stakes Poker". Akaonekwawo mumwaka mitatu yekutanga yehusiku husiku "Poker After Dark" paNBC. Greenstein akahwinawo mbiri World Poker Tour (WPT) mazita: weChishanu Annual Jack Binion World Poker Open ($1,278,370), uye 2006 WPT Invitational paCommerce Casino ($100,000). Akakundawo mamwe mazita maviri eWPT mune zviitiko zvakakosha: WPT Baba neVanakomana Tournament, 2006 World Poker Finals; uye WPT Poker neBhuku: Chitsauko 2. Kubva muna 2008, akatanga kupa mubairo wake kune rudo. Pana 2008 World Series of Poker (WSOP), Greenstein cashed muna nhanhatu zviitiko nokuda dzinokwana $768,461. Akapedzawo wechipiri muna 2008 WSOP Player of the Year standings, shure Erick Lindgren. Mukati
Muna 2011, Greenstein akahwina kashanu paWorld Series of Poker, kusanganisira nzvimbo yechitatu mu$10,000 Limit Hold'em Championship ye $169,512 uye nzvimbo yechi15 mu$50,000 Player's Championship.