Buuxi weedha soo socota: 19-kii Febraayo 2018, Mrázek waxaa loo beddelay Philadelphia Flyers iyada oo lagu beddelay doorashada wareega afraad ee shuruud ahaan
2018 NHL Draft iyo doorashada wareega saddexaad ee shuruudsan ee 2019. 22-kii Febraayo, wuxuu markii ugu horreysay u saftay Flyers halkaas oo uu sameeyay 19 badbaadin guul 2-1 ah oo ka soo gaartay Columbus Blue Jackets.