Nash (back) suffered a setback Wednesday and consequently is not expected to play in Thursday's preseason game versus the Jazz, the Los Angeles Times reports. Nash reportedly tweaked his back while carrying bags, evidencing his fragility despite being a professional athlete. However, prior to Wednesday's incident, Nash had missed the Lakers' previous two practices, as well as Sunday's preseason game, due to discomfort. When considering his chronic pain, it's not surprising that the 40-year-old Nash incurred another setback. No matter, Nash is not expected to play Thursday and although Jeremy Lin (ankle) is also banged-up, it appears Lin is now the front-runner in the Lakers' point guard competition.