On this On this week's Floor and Decor Next Level, Houston Chron writer, Jon Poorman, talks about how Manvel's ground attack led by Ty Harris and De'Monte' Seymore makes the Mavericks a tough opponent in the post season.week's @flooranddecor Next Level, @HoustonChron writer, @JonPoorman, talks about how Manvel's ground attack led by Ty Harris and De'Monte' Seymore makes the Mavericks a tough opponent in the post season.