Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Date | Opponent | Score | Loss | Attendance | Record |
| --- | --- | --- | --- | --- | --- |
| September 1 | @ Nationals | 7–4 | Kendrick (11–8) | 28,393 | 75–63 |
| September 2 | @ Nationals | 4–0 | Lannan (8–13) | 23,150 | 76–63 |
| September 3 | @ Nationals | 9–7 | C. Durbin (5–4) | 23,122 | 76–64 |
| September 5 | @ Mets | 3–0 | Pelfrey (13–9) | 48,302 | 77–64 |
| September 6 | Postponed due to weather (September 7) | Postponed due to weather (September 7) | Postponed due to weather (September 7) | Postponed due to weather (September 7) | Postponed due to weather (September 7) |
| September 7 | @ Mets (DH-1) | 6–2 | Martínez (5–4) | 55,797 | 78–64 |
| September 7 | @ Mets (DH-2) | 6–3 | Hamels (12–9) | 54,980 | 78–65 |
| September 8 | Marlins | 8–6 | Sánchez (2–4) | 38,921 | 79–65 |
| September 9 | Marlins | 10–8 | Kendrick (11–9) | 40,554 | 79–66 |
| September 10 | Marlins | 7–3 | Myers (9–11) | 38,665 | 79–67 |
| September 11 | Brewers | 6–3 | Sheets (13–8) | 39,994 | 80–67 |
| September 12 | Postponed due to weather (September 14) | Postponed due to weather (September 14) | Postponed due to weather (September 14) | Postponed due to weather (September 14) | Postponed due to weather (September 14) |
| September 13 | Brewers | 7–3 | Parra (10–8) | 45,105 | 81–67 |
| September 14 | Brewers (DH-1) | 7–3 | Mota (5–6) | 43,950 | 82–67 |
| September 14 | Brewers (DH-2) | 6–1 | Suppan (10–9) | 39,776 | 83–67 |
| September 16 | @ Braves | 8–7 | González (0–3) | 30,319 | 84–67 |
| September 17 | @ Braves | 6–1 | Jurrjens (13–10) | 32,821 | 85–67 |
| September 18 | @ Braves | 4–3 | Hampton (2–3) | 39,070 | 86–67 |
| September 19 | @ Marlins | 14–8 | Myers (10–12) | 20,202 | 86–68 |
| September 20 | @ Marlins | 3–2 | Sánchez (2–5) | 28,757 | 87–68 |
| September 21 | @ Marlins | 5–2 | Volstad (5–4) | 28,173 | 88–68 |
| September 22 | Braves | 6–2 | Bennett (3–7) | 36,796 | 89–68 |
| September 23 | Braves | 3–2 | Hamels (14–10) | 39,322 | 89–69 |
| September 24 | Braves | 10–4 | Myers (10–13) | 41,430 | 89–70 |
| September 26 | Nationals | 8–4 | Balester (3–7) | 44,145 | 90–70 |
| September 27 | Nationals | 4–3 | Lannan (9–15) | 45,177 | 91–70 |
| September 28 | Nationals | 8–3 | Pérez (7–12) | 44,945 | 92–70 |
Question:
Attendance of 23,150 had what opponent?
Answer:
@ Nationals