I like watching football <a href="http://skipetriny.cz/hip-implant-lawsuit-settlements-0a52.pdf">hip implant lawsuit settlements</a>  NEW YORK, July 15 (Reuters) - Citigroup's strong earningshelped the S&P 500 end higher on Monday for an eighth straightday, the longest such streak since mid-January, though weakretail sales limited gains in a session with the lowest volumeof the year.