20.2 |- | style="text-align:left;"| 2017–18 | style="text-align:left;"| Connecticut | 32 || 32 || 29.7 || .530 || .475 || .835 || 4.5 || 3.8 || 1.2 || 0.2 || 17.4 |- | style="text-align:left;"| 2018–19 | style="text-align:left;"| Connecticut | 34 || 34 || 33.1 || .453 || .376 || .876 || 6.3 || 3.9 || 1.2 || 0.6 || 18.5 |- | colspan=2; align=center| Career |140 || 125 || 29.6 || .491 || .416 || .847 || 4.5 || 3.3 || 1.2 || 0.3 || 16.8 |- WNBA Source Regular season |- | style="text-align:left;"| 2019 | style="text-align:left;"| Chicago | 20 || 0 || 7.6 || .316 || .276 || .800 || 0.9 || 0.4 || 0.3 || 0.1 || 0.2 || 2.4 |- | style="text-align:left;"| | style="text-align:left;"| Dallas | style="background:#D3D3D3"| 22° || 4 || 20.0 || .417 || .317 || .733 || 2.4 || 1.4 || 0.7 || 0.4 || 0.6 || 5.0 |- | style="text-align:left;"| | style="text-align:left;"| Seattle | style=| 27 || 24 || 21.0 || .456 || .351 || .731 || 3.5 || 1.7 || 0.7 || 0.3 || 1.1 || 7.0 |- | style="text-align:left;"| | style="text-align:left;"| Los Angeles | style=| 32 || 29 || 29.5 || .373 || .352 || .837 || 3.0 || 1.9 || 1.0 || 0.2 || 1.1 || 9.7 |- class="sortbottom" | style="text-align:left;"| Career | style="text-align:left;"| 4 years, 4 teams | 101 || 57 || 20.8 || .399 || .339 || .791 || 2.6 || 1.4 || 0.7 || 0.2 || 0.8 || 6.5 Playoffs |- | style="text-align:left;"| 2019 | style="text-align:left;"| Chicago | 2 || 0 || 2.1 || – || – || – || 0.5 || 0.5 || 0.0 || 0.0 || 0.0 || 0.0 |- | style="text-align:left;"| | style="text-align:left;"| Seattle | style=| 1 || 1 || 35.0 || .600 || .667 || 1.000 || 5.0 || 0.0 || 1.0 || 0.0 || 1.0 || 18.0 |- class="sortbottom" | style="text-align:left;"| Career | style="text-align:left;"| 2 years, 2 teams | 3 || 1 || 13.0 || .600 || .667 || 1.000 || 2.0 || 0.3 || 0.3 || 0.0 || 0.3 || 6.0 Personal life Samuelson was born in Fullerton, California. Her father Jon played basketball at Cal State Fullerton and professionally in Europe. Her mother Karen was a Netball player. Katie Lou has two older sisters who both played at Stanford: Bonnie, who after college decided to instead study optometry; and Karlie, who has