It is the fourth seed next for Mark (ATP 1213), who like Mark lost to the Brazilian Luis Guto Miguel last week - but in Keaton's case after putting together 4 wins to reach the semis.
It's meant to be ultra hot again tomorrow and junior singles matches are down to start at 9am local with only 1 or 2 matches per court and then doubles played in the evening. Mark is 2nd on for his singles so may not avoid the heat so much.