The Istanbul derby should be settled by serve pressure and by who closes late in sets, because one side scores from four places and the other depends on reception staying in system. In Paris, two short-passing sides meet and the match turns on who regains the ball near the other's goal. The home side's chance numbers there are better than its recent goals against suggest, and the visitors' record rests more on game state and goalkeeping than on volume.
Fenerbahce have real attacking depth. Against Eczacibasi the points were split between Ana Cristina on 22, Vargas on 21, Fedorovtseva on 17 and Eda Erdem on 14, and they won the late phases of three sets, one of them from 19-20 down. Galatasaray have shown a ceiling of two sets, with 2-0 leads against THY and Aras, but they lost three straight sets both times, and the only opponent of this level so far held them to 20, 20 and 22 points at Vakifbank.
The key matchup is Fenerbahce's serve against Ilkin, Sylla and a new libero. If that reception breaks, Bongaerts can no longer use the middles and the attack narrows to high balls for Carutasu. Galatasaray's best answer is serving at Castillo's line, which is how Eczacibasi took a set, and that is the likely size of their route: one set from a serve run. Sylla is back and started the last match, which helps. Fenerbahce's only two-set concession came at Besiktas with Vargas and Jack-Kisal outside the listed six, so the 3-2 there overstates how often the full side gives up two. That's why I'm siding with Fenerbahce to win while Galatasaray stop at one set at most.
In Paris, Paris FC have 13.82 xG for and 8.15 against over eight league matches, while Monaco sit at 9.01 and 9.78 over seven. At Jean Bouin the hosts make 1.84 xG a game, and Monaco's three away matches with stats show just 0.72. Monaco's low goals-against figure is real, with only two open-play goals conceded, but they have given up plenty of chances and Hradecky has done a lot of the work. Paris FC's defending story needs context too: all three Rennes goals were penalties.
Sinayoko against Sane and Teze is the main contest, with Salisu left out of the squad and Dier only just back in training. Lopez and Lees-Melou are available in midfield. Monaco's best route is Nazinho and Golovin down Paris FC's unsettled right side, and Koleosho's absence takes away a pace outlet on the break.
I expect a controlled start, with Paris FC, who have not trailed for a minute at home this season, looking for early regains, and Monaco lifting after half-time through Diop and Abline. A level game around the hour is a real shape, since both sides can have low-output days. The content over the whole season still points one way, so I'm siding with Paris FC at home, on a selection that still stands if the match stays level.