NEW YORK ( TheStreet) -- CHANGE IN RATINGS DiamondRock Hospitality ( DRH) upgraded at Citi to Buy from Hold on relative valuation and potential sentiment shift. $11.50 price target. FirstEnergy ( FE - Get Report) downgraded at Citi to Hold from Buy as near term opportunity closed. Maintain $39 price target. International Paper ( IP - Get Report) upgraded at BofA Merrill to Buy from Neutral. Price target raised to $32 from $30. 2010 EPS estimates raised to $1.90 from $1.75. Kforce ( KFRC) upgraded at Credit Suisse to Outperform from Neutral and price target increased to $18 from $13. Temp staffing growth continuing rapid recovery. Lazard ( LAZ - Get Report) downgraded at Goldman to Neutral from Buy on M&A headwinds, volatility, and sovereign uncertainty. Price target cut to $15 from $20. Niska Gas Storage ( NKA) initiated at Credit Suisse with an Outperform rating and $21 price target. Pure-play natural gas storage MLP driven by increasing natural gas consumption. OpenTable ( OPEN) downgraded at Citi to Hold from Buy. Pure valuation call. Maintain $45 price target. Public Service Enterprise Group ( PEG) upgraded at Goldman to Conviction Buy List on strong EPS growth and improving cash flows. Price target set at $41. Polycom ( PLCM) upgraded at BofA Merrill. Rating raised to Buy from Neutral. Price target raised to $38 from $35. 2010 EPS estimates raised to $1.38 from $1.23. Robert Half ( RHI - Get Report) upgraded at Credit Suisse to Outperform from Neutral and price target raised to $31 from $30. Demand for temps still improving. Rock Tenn ( RKT) downgraded at BofA Merrill. Rating lowered to Neutral from Buy. Price target raised to $60 from $55. 2010 EPS estimates raised to $4.15 from $4.10.