you new to badminton? robert mateausiak has been around for a long time. he and zieba were world no 1 for a while before zieba took a break to have a baby. they almost beat xu chen/ ma jin in the london 2012 quarter finals. they won indonesian premier SS in 2010.
Sorry about this then. To be honest I don't know both of them and I also didn't know that Poland have such a good XD in the past.