This leading dividend-paying oil stock just beat expectations in the first quarter.RBC Capital recently raised its price target on Devon Energy (DVN 0.57%) to $57 from $55 and maintained a "sector perform" rating on the stock. My take on a "sector perform" rating is that it is a de facto sell rating, because investors might as well hold the sector through an ETF and eliminate the stock-specific risk inherent in holding one stock.That said, the $57 price target still represents a nearly 12% upside from the c ...