November 18, 2013 2B Mark DeRosa retired.

January 22, 2013 Toronto Blue Jays signed free agent 2B Mark DeRosa.

November 3, 2012 LF Mark DeRosa elected free agency.

October 15, 2012 Washington Nationals activated LF Mark DeRosa.

September 1, 2012 Washington Nationals activated LF Mark DeRosa from the 15-day disabled list.

August 6, 2012 Washington Nationals placed LF Mark DeRosa on the 15-day disabled list retroactive to August 5, 2012. Left abdominal strain.

June 25, 2012 Washington Nationals activated LF Mark DeRosa from the 15-day disabled list.

June 21, 2012 sent 3B Mark DeRosa on a rehab assignment to Potomac Nationals.

April 29, 2012 Washington Nationals placed LF Mark DeRosa on the 15-day disabled list retroactive to April 28, 2012. Oblique strain.

December 28, 2011 Washington Nationals signed free agent LF Mark DeRosa.

October 30, 2011 3B Mark DeRosa elected free agency.

August 4, 2011 San Francisco Giants activated 3B Mark DeRosa from the 60-day disabled list.

July 19, 2011 San Jose Giants sent 3B Mark DeRosa on a rehab assignment to Fresno Grizzlies.

July 16, 2011 Mark DeRosa assigned to San Jose Giants.

July 15, 2011 San Francisco Giants transferred 3B Mark DeRosa from the 15-day disabled list to the 60-day disabled list.

May 19, 2011 San Francisco Giants placed 3B Mark DeRosa on the 15-day disabled list. Left wrist strain

May 10, 2011 Mark DeRosa roster status changed by Fresno Grizzlies.

May 10, 2011 San Francisco Giants activated 3B Mark DeRosa from the 15-day disabled list.

May 7, 2011 sent 3B Mark DeRosa on a rehab assignment to Fresno Grizzlies.

April 28, 2011 San Francisco Giants placed 3B Mark DeRosa on the 15-day disabled list retroactive to April 25, 2011. Sore left wrist.

November 9, 2010 San Francisco Giants activated 3B Mark DeRosa from the 60-day disabled list.

June 26, 2010 San Francisco Giants transferred LF Mark DeRosa from the 15-day disabled list to the 60-day disabled list.

June 2, 2010 San Jose Giants sent OF Mark DeRosa on a rehab assignment to Fresno Grizzlies.

May 31, 2010 Mark DeRosa assigned to San Jose Giants.

May 17, 2010 San Francisco Giants placed LF Mark DeRosa on the 15-day disabled list. Left Wrist Injury

December 29, 2009 San Francisco Giants signed free agent LF Mark DeRosa.

November 5, 2009 3B Mark DeRosa elected free agency.

July 18, 2009 St. Louis Cardinals activated 3B Mark DeRosa from the 15-day disabled list.

July 7, 2009 St. Louis Cardinals placed 3B Mark DeRosa on the 15-day disabled list retroactive to July 1, 2009. left wrist sprain