Phoenix (PHX) - decreased frequency from 10 flights to 7 flights per week from 31 March 2019
Note this one is because AA is adding daily service on a rather early flight each day, so combined OW it's an increase from 10 to 14 flights, though the 777-200 that AA flies has no first class and a lower number of business class seats than the second BA flight.
The new flight is pretty awful for jetlag on the PHX-LHR segment, but pretty strong for connections to further destinations such as India:
AA 194 15:00 PHX - 09:25 LHR
AA 195 09:30 LHR - 12:30 PHX