Stay fast. Do not get slow in any case, unless direct on target's 6 and firing. even then it is risky.
If he climbs, try to match it only from distance. When he attacks, be sure to be fast. Only speed will save you.
Dive if in trouble. If he follows, you will outrun him and level the E with him. If he stays above, you can't do much (in arena you'd find another fight, in H2H you have to wait).
Come in fast and try to deliver some deflection shots.
Sometimes they are not too aggressive. An aggressive 190 can surprise them, but you play a risky game. If they know what they are doing, you must be very careful.