Need Help with Rios for Kazmir trade!

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Was offered my Rios for his Kazmir? Should I accept this? Or should I counter and maybe add one of his closers? thanks

5x5 standard H2H 10 team

My team

C - Soto
1B - Tex
2B - Cano
3B - Chipper
SS - Rollins
OF - Sizemore
OF - Kemp
OF - Rios
Util - Huff
Util - Hawpe
BN - Adam Jones
BN - Pence
SP - Burnett, Shields, Verlander, Bedard, King Felix, Randy Johnson, Slowey, Davies
RP - Wood, Fuentes
DL - Hoffman

His Team

C - Pierzynski
1B - Fielder
2B - Roberts
3B - Wright
SS - Furcal
OF - Holliday
OF - Mclouth
OF - Werth
Util - Hafner
Util - Adrian Gonzalez
SP - Hamels, Kazmir, Cain, Anibal Sanchez, Kawakami
RP - Bell, Jenks, Rodney, Capps, Rivera, Mike Gonzalez, BJ Ryan

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