 Complete the following phrase:  Mercedes introduced a raft of updates in Japan for the front wing, sidepod deflectors, and floor, aimed to increase efficiency against Ferraris straight-line speed and Red Bulls overall downforce balance. This was noted to be the final updates of the season as Mercedes shifted focus to 2020, and while it did improve their competitiveness in the final rounds of the year, it was not a substantial increase in speed and its impact was masked by the extreme natures of the tracks and races in that part of the year. Mercedes took pole in only 2 races 