The Baltimore Ravens are signing punter Sam Koch to an $18.75 million deal that includes $16.25 million in new money in his five-year extension, according to The Baltimore Sun. Koch got a $4 million signing bonus and $7.3 million in total guaranteed money. Koch was entering the final year of a five-year, $12.516 million deal signed in 2011. The deal averages $3.25 million per year in new money. Koch is now under contract through the 2020 season. Koch is coming off a career-best season where he averaged 47.4 yards per punt and 43.3 net yards. Follow me on Twitter: @RavensInsider Aaron Wilson covers the Ravens for The Baltimore Sun