Energy sector’s slide enters a third session By: MarketWatch May 04, 2011 at 10:18 AM EDT First Solar and Devon Energy are among the noteworthy early decliners, in the wake of disappointing financial results. Read More >> Related Stocks: Anadarko Petroleum Cameron International Chevron Corp Devon Energy First Solar Natl Oilwell Varco PG&E Corp Standard & Poors 500