sentences:  Achterberg made his 300th Rovers appearance in the opening day game of the 2008–09 season against Swindon Town.Achterberg had his testimonial game in 2009 for Tranmere against an Everton XI.After retiring from playing/coaching in 2009 with Tranmere Rovers, Achterberg joined Liverpool FC in June 2009 as a goalkeeping coach of the reserve and academy goalkeepers before being promoted to first-team goalkeeping coach in summer 2011.